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Ask a Mathematician / Ask a Physicist. Physicist: This was an interesting back-and-forth, so the original questions are italicized.
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Q: How is matter created? Can we create new matter and would that be useful?
Physicist: This was an interesting back-and-forth, so the original questions are italicized. What was the energy at the start of the universe and how did it create matter? If the question is "how much?" or "where did it come from?", the answers are unfort
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Q: Is it possible to create an "almanac" of human behavior that predicts everything a person will do?
The original question was: "Furthermore, you say, science will teach men (although in my opinion a superfluity) that they have not, in fact, and never have had, either will or fancy, and are no more than a sort of piano keyboard or barrel-organ cylinder;
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Q: How hot can a greenhouse get?
Physicist: A greenhouse is a little like a "light pump" that works because of the picky transparency of glass. The hotter something is, the shorter the wavelength of the light it radiates (it glows bluer). The heat you feel from radiators, fires, or peopl
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Q: Is π the same in every universe?
Mathematician: That depends on what you mean by "universe." Here's a framing: A circle of radius R centered at a point P is the set of all points in the plane with distance R from P. The diameter D of this circle is twice the radius, but can also be thoug
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Q: If the universe gets split in the Many Worlds Interpretation, then why aren't all probabilities 50/50? Does stuff get spread thinner and thinner with each split?
The original question from "A" was: I'm reading Sean Carroll's book Something Deeply Hidden, which is entirely about Many Worlds, and I'm following along for the most part, but there's something I still don't understand. … Carroll considers an example in
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