Is the sun important to us? Absolutely

Why is the sun important to us?
 
For starters, the gravitational attraction of the sun holds the earth in a stable orbit, which is necessary for our very existence as living beings on this planet.

The sun is a giant source of energy. Einstein pointed out the relationship between energy and mass, in his famous e = m c-squared equation. Every second, thousands of tons of mass are turned into energy, by the sun. The process involves four Hydrogen nuclei fusing into a Helium nucleus, which has a little less mass than the Hydrogen nuclei. This fusion wouldn’t be possible without the extreme temperature in the core of the sun – millions of degrees. Temperature is a measurement of the velocity of molecules. At absolute zero, all motion ceases. In the core of the sun, the velocity of particles is so high that they can overcome natural forces of mutual repulsion, hence slamming together and fusing nuclei.

In case you didn’t know, the c in Einstein’s equation is the velocity of light, a large number, and it’s squared. That means that a little bit of mass can be converted to a lot of energy.

What happens to the sun’s radiated energy? Most of it goes off into space, perhaps eventually hitting something. The sun is about 93,000,000 miles away from us. Think of a giant sphere, with a diameter that large. The sun’s radiated energy goes off evenly in all directions. The earth occupies only a very small fraction of the surface of that imaginary sphere. But that very small fraction gets hit by a tiny bit of the sun’s emitted energy, and that is very important to us.

Energy from the sun keeps the earth at a temperature compatible with human, and other, life. It is possible that there is life elsewhere in the solar system, but not likely. Either conditions would be too hot for life, or too cold, in most planets and planetary moons, such as the moons of Saturn.
 
Energy from the sun, in the form of light, makes it possible for us to perceive the world around us, using vision. Most insects, most vertebrates, and some other animals use vision, which would be impossible without light from the sun. (Some animals can see types of light that we can’t, but that statement still applies.) We can perceive the world around us in other ways, to be sure, but vision is arguably more important than the other senses we have.

Energy from the sun makes the seasons possible, and also makes various critically important earthly phenomena, such as the water cycle, possible. Energy from the sun makes erosion and weathering of rocks possible.

Energy from the sun, in the form of light, makes photosynthesis possible. Essentially all of the food energy we take in came directly or indirectly from photosynthesis. In photosynthesis, light is captured by green plants, who use it to produce sugars and various other organic substances, that we need to build ourselves, and to release energy to keep us going.

Is the sun important to us? Absolutely. Yes, that’s the right word – absolutely.

Perhaps St. Paul was speaking of the critical importance of light, when, under the inspiration of the Holy Spirit, he wrote “1 Timothy 6:15b who is the blessed and only Ruler, the King of kings, and Lord of lords; 16 who alone has immortality, dwelling in unapproachable light; whom no man has seen, nor can see: to whom be honor and eternal power. Amen. (World English Bible, public domain.)

Sunspots 714

Things I have recently spotted that may be of interest to someone else:

Christianity: Christianity Today reports on a survey that indicates that regular church attendants are healthier and happier than non-attenders.
He Lives has a thought-provoking post on some words or phrases -- should Christians say them?
(And Politics) Relevant points out that politicians often have a hard time quoting the Bible. Nancy Pelosi thinks she is, but she isn't.


Computing: You probably don't need Gizmodo to report that there were more robocalls than ever in 2018.

Gizmodo also reports that robots can play Jenga well. (See a bit of the videos included, if you don't know Jenga.)

Health: Gizmodo, reporting on a study published in the British Medical Journal, says that eating a good breakfast doesn't seem to help you lose weight.

Gizmodo also tells us about some remedies for the common cold that don't work, and, in some cases, shouldn't be used at all for the disease (like antibiotics), and a few that do help people to feel better.
 
Politics: FiveThirtyEight considers the questions of whether Iowa, New Hampshire and/or South Carolina will hold Republican primaries or caucuses in 2020.

The Atlantic reports that President Trump tweeted some extreme estimates (or extreme exact figures) on how many illegal immigrants we have, what it is costing us, and how many people voted illegally in Texas.

Relevant reports on the faith of Cory Booker, Democratic candidate for President.

Science: Science Alert explains the relationship between global warming and the polar vortex.

Scientific American reports on the migration of painted turtles. 

About the amazing eyes of the mantis shrimp, which can see colors, and polarization, that, as far as we know, no other creature can see.
 
The graphic used in these posts is from NASA, hence, I believe, it is public domain. 

Thanks for looking!

Sunspots 600

Things I have recently spotted that may be of interest to someone else:

Christianity: (sort of) Scientific American (!) on how to be a better forgiver.

Relevant on how social media are shaping our lives, in ways you may not have considered.

Listverse reminds us of 10 (actually more) people in the Bible who were important, but are not named.


Computing: You probably don't want to know how I keep up with several RSS feeds, such as those from Relevant, Christianity Today, Scientific American, BioLogos, and several blogs by individuals, but I'll tell you. I use Feedly. Gizmo's Freeware (I follow its posts through Feedly) suggests a number of RSS aggregators, including Feedly, all free. Perhaps one of these would help you.

Finance: (or something) Scientific American on how deadlines actually help people to get things done.

Food: Scientific American also reports that some insects that are eaten commonly (in some cultures, anyway) are better sources of iron in the diet than beef.

History: From the American Museum of Natural History, a video showing the growth of the human population through time, especially the last two millennia.

Listverse tells us 10 things that you didn't know about toilet paper.


Politics: Relevant says that there were lots of fake news stories related to the recent political campaigns, on Facebook. Mark Zuckerberg, CEO of Facebook, says that he doesn't think they influenced the election much, if at all. I saw some fake news, but figured the Facebook Friends who re-posted the items weren't interested in being told that the Mexican legislature really hasn't agreed to pay for Mr. Trump's wall, or that someone in the FBI wasn't shot to death over the e-mail leaks. As I understand it, such fake news makes money from being seen, and the more bizarre the claim, the more likely that people will look at the page.

Science: Listverse discusses 10 amazing facts (they said "eye-popping facts") about human vision.

Scientific American points out eight worrisome trends in the world's climate.





Image source (public domain)

Tenses in the book of Revelation

Revelation 1:4 John, to the seven assemblies that are in Asia: Grace to you and peace from God, who is and who was and who is to come; and from the seven Spirits who are before his throne;
 
1:7 Behold, he is coming with the clouds, and every eye will see him, including those who pierced him. All the tribes of the earth will mourn over him. Even so, Amen.
 
3:11a I am coming quickly!
 
3:15 “I know your works, that you are neither cold nor hot. I wish you were cold or hot. 16  So, because you are lukewarm, and neither hot nor cold, I will vomit you out of my mouth.
 
4:1 After these things I looked and saw a door opened in heaven, and the first voice that I heard, like a trumpet speaking with me, was one saying, “Come up here, and I will show you the things which must happen after this.”
 
4:8 The four living creatures, each one of them having six wings, are full of eyes around and within. They have no rest day and night, saying, “Holy, holy, holy is the Lord God, the Almighty, who was and who is and who is to come!”
9 When the living creatures give glory, honor, and thanks to him who sits on the throne, to him who lives forever and ever, 10a the twenty-four elders fall down before him who sits on the throne, and worship him who lives forever and ever...

5:3 No one in heaven above, or on the earth, or under the earth, was able to open the book or to look in it. 4 Then I wept much, because no one was found worthy to open the book or to look in it. 5 One of the elders said to me, “Don’t weep. Behold, the Lion who is of the tribe of Judah, the Root of David, has overcome: he who opens the book and its seven seals.” 6a I saw in the middle of the throne and of the four living creatures, and in the middle of the elders, a Lamb standing, as though it had been slain ...

6:1 I saw that the Lamb opened one of the seven seals, and I heard one of the four living creatures saying, as with a voice of thunder, “Come and see!”
 
7:13 One of the elders answered, saying to me, “These who are arrayed in the white robes, who are they, and where did they come from?”
14 I told him, “My lord, you know.”
He said to me, “These are those who came out of the great tribulation. They washed their robes, and made them white in the Lamb’s blood. 15a Therefore they are before the throne of God, they serve him day and night in his temple. 
 
11:3 I will give power to my two witnesses, and they will prophesy one thousand two hundred sixty days, clothed in sackcloth.” 4 These are the two olive trees and the two lamp stands, standing before the Lord of the earth. 5 If anyone desires to harm them, fire proceeds out of their mouth and devours their enemies. If anyone desires to harm them, he must be killed in this way. 6 These have the power to shut up the sky, that it may not rain during the days of their prophecy. They have power over the waters, to turn them into blood, and to strike the earth with every plague, as often as they desire. 7 When they have finished their testimony, the beast that comes up out of the abyss will make war with them, and overcome them, and kill them. 8 Their dead bodies will be in the street of the great city, which spiritually is called Sodom and Egypt, where also their Lord was crucified. 9 From among the peoples, tribes, languages, and nations, people will look at their dead bodies for three and a half days, and will not allow their dead bodies to be laid in a tomb. 10 Those who dwell on the earth rejoice over them, and they will be glad. They will give gifts to one another, because these two prophets tormented those who dwell on the earth. 11 After the three and a half days, the breath of life from God entered into them, and they stood on their feet. Great fear fell on those who saw them.
 
14:17 Another angel came out of the temple which is in heaven. He also had a sharp sickle. 18 Another angel came out from the altar, he who has power over fire, and he called with a great voice to him who had the sharp sickle, saying, “Send your sharp sickle, and gather the clusters of the vine of the earth, for the earth’s grapes are fully ripe!” 19 The angel thrust his sickle into the earth, and gathered the vintage of the earth, and threw it into the great wine press of the wrath of God. 20 The wine press was trodden outside of the city, and blood came out of the wine press, even to the bridles of the horses, as far as one thousand six hundred stadia.

Revelation 17:8 The beast that you saw was, and is not; and is about to come up out of the abyss and to go into destruction. Those who dwell on the earth and whose names have not been written in the book of life from the foundation of the world will marvel when they see that the beast was, and is not, and shall be present.
 
20:7 And after the thousand years, Satan will be released from his prison, 8 and he will come out to deceive the nations which are in the four corners of the earth, Gog and Magog, to gather them together to the war; the number of whom is as the sand of the sea. 9 They went up over the width of the earth, and surrounded the camp of the saints, and the beloved city. Fire came down out of heaven from God and devoured them. 10 The devil who deceived them was thrown into the lake of fire and sulfur, where the beast and the false prophet are also. They will be tormented day and night forever and ever. 

21:1 I saw a new heaven and a new earth: for the first heaven and the first earth have passed away, and the sea is no more. 2 I saw the holy city, New Jerusalem, coming down out of heaven from God, prepared like a bride adorned for her husband.

21:5 He who sits on the throne said, “Behold, I am making all things new.” He said, “Write, for these words of God are faithful and true.” 6 He said to me, “I have become the Alpha and the Omega, the Beginning and the End. I will give freely to him who is thirsty from the spring of the water of life. 7  He who overcomes, I will give him these things. I will be his God, and he will be my son.
 
22:12 “Behold, I come quickly. My reward is with me, to repay to each man according to his work. 13 I am the Alpha and the Omega, the First and the Last, the Beginning and the End.

All Bible quotations above, from Revelation, are from the World English Bible, public domain. I am grateful. Emphasis added. These quotations are among many which have some indication of tense -- whether things have already happened, or will happen in the future. There are many other such passages in Revelation. I make no claim to be an expert on Revelation, which is, to say the least, a difficult book to understand, and have seldom posted on that book. (But see here.)

One thing that Revelation indicates is that Christ is eternal, as in 1:4, 21:6, and 22:12-13. He was, and is, and will be. Another truth is that He is returning in triumph. See the first three quotations above, and the last one, and many others throughout the book. Whatever the beast of Revelation 17 represents, is almost eternal -- was, is not, and is again, long enough to be destroyed.

Chapters 2 and 3 are, apparently, messages to seven churches. (They are probably also meant as messages to subsequent readers, including us.) Verses 3:15-16 are an example that seems to say that Christ is going to judge these churches, in the future, perhaps in the near future.

4:1 introduces us to the rest of the book, which is apocalyptic and prophetic, and, based on that verse, is about things which are to come.

4:8-10 reiterate that the triumphant Christ is eternal -- He was victorious before the earth appeared, and will be victorious for eternity.

John's narrative is not entirely linear. There are some cases where he says something like "xyz is going to happen," then describes the results of xyz, after it has happened. 5:3-6 may be an example of this. It starts out by saying that no one can open the book (or scroll, in some versions) then we are told that the Lamb is honored as one who "opens the book." But 6:1 describes what happened, as if John had just seen it, when one of the seals is, in fact, opened.

11:3-11 is a better example of the "xyz phenomenon". The beast will kill the two witnesses, but then John tells us that they have already been killed, and have been resurrected. 14:17-20 is another example. An angel is told to act, then John writes as if the action had already taken place. 20:7-10 is an especially good example. We are told that Satan will be released from prison, then John tells us what happened when he was released. 21:5-7 may be another example. God is making all things new, but the rewards will come later, as if He hasn't done so yet.

21:1-2 seem to be about after the Final Kingdom is established, which, to us at least, is some time in the future, and was also even further into John's future. But John describes it as if he has seen it. 7:13-15 seem to be about what happened in the Great Tribulation, but also about the reward for those who went through it, after Christ's triumph.

Conclusion? God is outside of our time. To him, the past, the present, and the future are all accessible. John was given a vision of the present and the future, and did his best to describe it, but it was probably impossible for him to explain what he experienced in such a way that we can fully understand it.

What is the message of Revelation? There are at least two messages for us, related ones. "Be faithful" is one such, especially in the second and third chapters. "Christ is triumphant" is another one. These messages are more important than having a bullet-proof timetable for future events, events that are in our past, our present, and our future.

Thanks for reading!

Guidance through visions, and other means: Some examples from the Bible

A number of Bible characters had a vision, or similar miraculous communication, from God. Sometimes, it was for the purpose of guidance. Sometimes, it was to receive a message from God for someone else. David was called to repent, in one case. In another case, David was told that God didn't want him to do something that he thought God would have wanted.

Some of the instances of special guidance are these:
Abraham: Genesis 15:1 After these things Yahweh’s word came to Abram in a vision, saying, “Don’t be afraid, Abram. I am your shield, your exceedingly great reward.”
18 In that day Yahweh made a covenant with Abram, saying, “I have given this land to your offspring, from the river of Egypt to the great river, the river Euphrates: 19 the land of the Kenites, the Kenizzites, the Kadmonites, 20 the Hittites, the Perizzites, the Rephaim, 21 the Amorites, the Canaanites, the Girgashites, and the Jebusites.” (Abraham had previously been told to go to what became the land of Israel to live, leaving his ancestral home.)

Jacob: Genesis 28:10 Jacob went out from Beersheba, and went toward Haran. 11 He came to a certain place, and stayed there all night, because the sun had set. He took one of the stones of the place, and put it under his head, and lay down in that place to sleep. 12 He dreamed. Behold, a stairway set upon the earth, and its top reached to heaven. Behold, the angels of God ascending and descending on it. 13 Behold, Yahweh stood above it, and said, “I am Yahweh, the God of Abraham your father, and the God of Isaac. I will give the land whereon you lie to you and to your offspring.

In Genesis 40, Joseph apparently interpreted the dreams of the cupbearer and the baker on the spot. In Genesis 41, Pharaoh, ruler of Egypt, had dreams that he could not interpret. God showed Joseph their meaning. Apparently God gave Joseph wisdom to understand these dreams on the spot, too, while he was talking with Pharaoh.

In Exodus 3, Moses saw a burning bush, which didn't burn up, and talked with God. His visitation was such that he not only heard from God, but he even questioned God's judgment.

There were various manifestations of God, to Moses, and to the entire congregation, during the Exodus from Egypt.

In Joshua 2, Rahab didn't have a special vision, but she was guided by knowledge of recent events:  8 Before they had lain down, she came up to them on the roof. 9 She said to the men, “I know that Yahweh has given you the land, and that the fear of you has fallen upon us, and that all the inhabitants of the land melt away before you. 10 For we have heard how Yahweh dried up the water of the Red Sea before you, when you came out of Egypt; and what you did to the two kings of the Amorites, who were beyond the Jordan, to Sihon and to Og, whom you utterly destroyed. 11 As soon as we had heard it, our hearts melted, and there wasn’t any more spirit in any man, because of you: for Yahweh your God, he is God in heaven above, and on earth beneath. 12 Now therefore, please swear to me by Yahweh, since I have dealt kindly with you, that you also will deal kindly with my father’s house, and give me a true sign; 13 and that you will save alive my father, my mother, my brothers, and my sisters, and all that they have, and will deliver our lives from death.” It is interesting that almost no one else took the same sort of action, even though what God had done for the Israelites was common knowledge. (The Gibeonites did act wisely, and deceived the Israelites, and Joshua, their leader, into making a peace treaty with them, in Joshua 9.)

In Judges 7, a Midianite man, in an army which was gathered for the purpose of attacking Israel, had a dream, which, he said, meant that the Midianites would be defeated by Gideon. Gideon, who was listening outside the man's tent, was encouraged by the dream.  

Samson's mother was visited by an angel, who instructed them to raise Samson as a Nazirite. (The angel spoke to Samson's father, too.)

God apparently spoke to Ruth through Naomi, the mother of her dead husband, and she became a follower of God.

Samuel 1 Samuel 3:10 Yahweh came, and stood, and called as at other times, “Samuel! Samuel!”

Then Samuel said, “Speak; for your servant hears.” There is no indication that Samuel's call to be a spokesman for God was fully revealed to him at that time -- he was a boy then -- but perhaps it was, and, for sure, God revealed Himself, and what was going to happen to Eli's family, to Samuel at that time.

David, being rebuked: 2 Samuel 12:7 Nathan said to David, “You are the man. This is what Yahweh, the God of Israel, says: ‘I anointed you king over Israel, and I delivered you out of the hand of Saul. 8 I gave you your master’s house, and your master’s wives into your bosom, and gave you the house of Israel and of Judah; and if that would have been too little, I would have added to you many more such things. 9 Why have you despised Yahweh’s word, to do that which is evil in his sight? You have struck Uriah the Hittite with the sword, and have taken his wife to be your wife, and have slain him with the sword of the children of Ammon. 10 Now therefore the sword will never depart from your house, because you have despised me, and have taken Uriah the Hittite’s wife to be your wife.’

11 “This is what Yahweh says: ‘Behold, I will raise up evil against you out of your own house; and I will take your wives before your eyes, and give them to your neighbor, and he will lie with your wives in the sight of this sun. 12 For you did this secretly, but I will do this thing before all Israel, and before the sun.’ ”

13 David said to Nathan, “I have sinned against Yahweh.” The Bible doesn't indicate how Nathan knew about these matters, but God must have told him, in some way.

In 1 Kings 3, God appeared to Solomon in a dream, and, in the dream, Solomon asked for wisdom, above all. God granted his wish.

David, being told that he was not to build the temple: 1 Chronicles 17:3 That same night, the word of God came to Nathan, saying, 4 “Go and tell David my servant, ‘Yahweh says, “You shall not build me a house to dwell in; 5 for I have not lived in a house since the day that I brought up Israel to this day, but have gone from tent to tent, and from one tent to another. 6 In all places in which I have walked with all Israel, did I speak a word with any of the judges of Israel, whom I commanded to be shepherd of my people, saying, ‘Why have you not built me a house of cedar?’ ” ’ 

Esther, who had become the queen of her country in exile, was given a task because of her position. The very existence of the Jews was threatened. Her relative, Mordecai, sent her this message: Esther 4:11b “Don’t think to yourself that you will escape in the king’s house any more than all the Jews. 14 For if you remain silent now, then relief and deliverance will come to the Jews from another place, but you and your father’s house will perish. Who knows if you haven’t come to the kingdom for such a time as this?” Even though the assignment came through a relative (God is not mentioned in the book of Esther) it was what God wanted her to do.
 
Prophets sometimes had dreams, or visions. In Isaiah 6, Isaiah had a vision of the glory of God. In Jeremiah 24, Jeremiah had a vision of two baskets of figs. Ezekiel had some remarkable visions.

Like Joseph, Daniel interpreted the dream of a powerful ruler, but, unlike Joseph, he did so after time for reflection and prayer, apparently joined by his three friends: Daniel 2:17 Then Daniel went to his house and made the thing known to Hananiah, Mishael, and Azariah, his companions: 18 that they would desire mercies of the God of heaven concerning this secret; that Daniel and his companions would not perish with the rest of the wise men of Babylon. 19 Then the secret was revealed to Daniel in a vision of the night. Then Daniel blessed the God of heaven.

Daniel interpreted other dreams. He also had visions, perhaps about end times, or the future of Israel. In Daniel 10, Daniel had a vision, or dream, that he couldn't interpret. A man, apparently an angel, told him the meaning.

In Luke 1, the angel, Gabriel, appeared to Zechariah, a priest, in the Temple. Zechariah was told that he and his wife, who had supposed that they would die childless, would have a son, John -- they were called to be his parents. Zechariah doubted the angel, and was punished by being unable to speak until the boy was born.

And Gabriel had another message, in the same chapter: 26 Now in the sixth month, the angel Gabriel was sent from God to a city of Galilee, named Nazareth, 27 to a virgin pledged to be married to a man whose name was Joseph, of David’s house. The virgin’s name was Mary. 28 Having come in, the angel said to her, “Rejoice, you highly favored one! The Lord is with you. Blessed are you among women!”
29 But when she saw him, she was greatly troubled at the saying, and considered what kind of salutation this might be. 30 The angel said to her, “Don’t be afraid, Mary, for you have found favor with God. 31 Behold, you will conceive in your womb, and give birth to a son, and will call his name ‘Jesus.’ 32 He will be great, and will be called the Son of the Most High. The Lord God will give him the throne of his father, David, 33 and he will reign over the house of Jacob forever. There will be no end to his Kingdom.”
34 Mary said to the angel, “How can this be, seeing I am a virgin?”
35 The angel answered her, “The Holy Spirit will come on you, and the power of the Most High will overshadow you. Therefore also the holy one who is born from you will be called the Son of God. 36 Behold, Elizabeth, your relative, also has conceived a son in her old age; and this is the sixth month with her who was called barren. 37 For nothing spoken by God is impossible.”
38 Mary said, “Behold, the servant of the Lord; let it be done to me according to your word.” Although Mary had a logical question, she accepted the answer, and the task, that of being mother to the Son of God.

Joseph, who was to be Mary's husband, received guidance in a dream: Matthew 1:20 But when he thought about these things, behold, an angel of the Lord appeared to him in a dream, saying, “Joseph, son of David, don’t be afraid to take to yourself Mary, your wife, for that which is conceived in her is of the Holy Spirit. 21 She shall give birth to a son. You shall call his name Jesus, for it is he who shall save his people from their sins.” 

The wise men were given guidance in a dream: Matthew 2:12 Being warned in a dream not to return to Herod, they went back to their own country another way.

Joseph, also in Matthew 2, was told, in a dream, to take Mary and Jesus to Egypt. He was also told to come back to Israel, after a stay in Egypt.

In Matthew 4, Jesus personally called some of his first followers.

In Matthew 9:9, Jesus called Matthew from his tax collection business.

In Acts 9, Christ, himself, visited Paul while he was on his way to Damascus to persecute the church. Soon after, Ananias had a vision, directing him to go to Paul and heal him of the blindness that had stricken him when Christ appeared to him. Both Paul and Ananias talked back, with Ananias, like Moses, suggesting that God was giving him poor guidance. (He wasn't, of course!)

In Acts 9, Dorcas/Tabitha did good works, providing for the needy. We don't know how she was called, but perhaps, just seeing the need, and that she could fill it, was her call.

In Acts 10, Peter had a vision, which directed him to go to speak to Cornelius, a Gentile, and those who were gathered there to hear what Peter had to say.

Paul had a significant vision, in Acts 16, directing his missionary party to go to Macedonia.

The entire book of Revelation seems to be a recounting of a visionary experience of John.

Thanks for reading. God is able to guide us, and He suits that guidance (including reproof) in ways appropriate to our background and personality.

Invisible in plain sight: a recurring theme in the works of Patricia A. McKillip

Patricia A. McKillip is a solid craftswoman of fantastic literature, and has been for over three decades. There's no sense of the occult in her works, and, seldom, great works of wizardry, causing disaster, or the reverse. Her characters usually face situations they don't fully understand, and the reader often feels that way, too. If that's the case, what makes her a great craftswoman? She uses words well, she knows how to create an atmosphere, and she knows how to describe life-changing experiences in her characters.

I have previously argued that rejection of vengeance is an important theme in many of McKillip's works. Another theme that occurs in some of her work is the importance of musical artistry. One of her books is named Harpist in the Wind, another Song for the Basilisk. These titles aren't accidents. Nor is that of "A Matter of Music," the longest story in her collection, Harrowing the Dragon. (New York: Ace, 2005). Another theme that occurs more than once is strange ancestry. In "A Matter of Music," even though the Jazi despise the Daghian people, some of the Jazi are part Daghian. In the Riddle-Master trilogy, Raederle is part Earth-Master. There are other examples of this in McKillip's writing.

It was while I was reading this collection that another of McKillip's themes occurred to me, that of the title. Her characters are often in plain sight, yet invisible to those around them. In "Ash, Wood, Fire," (in Harrowing) a kitchen helper in a castle is so invisible that the other workers in the kitchen have no name for her. Finally she leaves the kitchen. "Cooks, Sauces, Bakers milled bewilderedly, betrayed, calling, "Fire! Fire!" and never seeing her, while beside the door a young woman stood watching . . ." (185) This story is similar to the description of Saro in McKillip's The Book of Atrix Wolfe. In "Transmutations," a wizard's apprentice hasn't seen his female co-apprentice in her other life as a servant at a tavern, even though he goes there all the time.

But it isn't always fellow workers who don't see McKillip's characters. In her "The Snow Queen," also in Harrowing, a man doesn't see his wife, who loves him deeply. He sees another woman: "To his eye she was alone; the importunate young lapdog beside her did not exist." (154) He leaves her, and she blossoms during the separation: "For a moment he did not recognize her; he had never seen her laugh like that." (172)

In another story in the same book, a destructive villain is destroyed and dissuaded because someone sees aspects of him that no one else has ever seen. ("The Stranger")

On reflection, some of McKillip's other works have this same theme. In her Riddle-Master trilogy, some wizards hide in plain sight for centuries. Nun is a pig-herder, Suth a wild animal, Aloil a tree. And the most important character, the High One, masquerades for centuries as harpist for a false High One.

This theme is important, because we have the same problems. Probably all of us have been invisible to someone else, even though we are in plain sight. And, worse, probably all of us have overlooked a co-worker, a spouse, a store clerk, a neighbor, when we should have seen them for what they are. I'm afraid I have.

Thanks for reading.

"What Have You Changed Your Mind About?" pt. 4

I continue comments on Edge's "World Question" issue, which question is the same as my title. See the first part of this series, which gives some explanation, the second part and the third.

On this page of the issue, Lawrence Krauss explains why he has completely changed his views about cosmology, and why.

On the same page, Stephen Kosslyn writes about the interaction between genes and the environment:
. . . this stereo process — of computing depth on the basis of the disparities in where images strike the two retinas — depends on the distance between the eyes. And second, and this is absolutely critical, there's no way to know at the moment of conception how far apart a person's eyes are going to be, because that depends on bone growth — and bone growth depends partly on the mother's diet and partly on the infant's diet.

Also on the same page, Gary Klein has an essay on how firefighters make quick decisions about what to do.

The last essay on the page is about how Kevin Kelly, editor-at-large of Wired, has come to see that the Wikipedia is splendidly better than he had anticipated.

Thanks for reading!