/u/thetimujin's posts in /r/askscience

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If the criteria for two animals to be of different spiecies is whether or not they can produce offspring, then how do we define it for non-sexually reproducing spiecies?

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In mathematical logic, can we consider isomorphic entities to be the same entity? (explanation inside)

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Conservation of charge is neat, but it doesn't, strictly speaking, state that the total charge that is conserved has to be any specific number. What is the entire Universe's total charge?

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If I'm stuck in the middle of an ocean and have no fresh water, what would keep me alive longer: drinking seawater, or not?

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Why does a spherical universe imply a finite universe? (explanation inside)

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If laws of physics are time-reversible, what would happen if we reverse time until the Big Bang, and then some?

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So gravitational waves are a thing. Can there be a gravitational laser?

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If we accept the possible, but novel and unverified theories, like String Theory, as true, what new and interesting things could we tell about the inside of the Black Hole?

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How fast is the study of depression developing? How close are we to finding a general, not symtomatic cure?

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If I were stranded in the middle of the ocean with no supplies and had to survive as long as possible, would it be better for me to drink the sea water, or suffer from thirst?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If the criteria for two animals to be of different spiecies is whether or not they can produce offspring, then how do we define it for non-sexually reproducing spiecies?	1
In mathematical logic, can we consider isomorphic entities to be the same entity? (explanation inside)	1
Conservation of charge is neat, but it doesn't, strictly speaking, state that the total charge that is conserved has to be any specific number. What is the entire Universe's total charge?	1
If I'm stuck in the middle of an ocean and have no fresh water, what would keep me alive longer: drinking seawater, or not?	1
Why does a spherical universe imply a finite universe? (explanation inside)	1
If laws of physics are time-reversible, what would happen if we reverse time until the Big Bang, and then some?	1
So gravitational waves are a thing. Can there be a gravitational laser?	1
If we accept the possible, but novel and unverified theories, like String Theory, as true, what new and interesting things could we tell about the inside of the Black Hole?	1
How fast is the study of depression developing? How close are we to finding a general, not symtomatic cure?	1
If I were stranded in the middle of the ocean with no supplies and had to survive as long as possible, would it be better for me to drink the sea water, or suffer from thirst?	1