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

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If smallpox killed so much of the Inca civilization when the Europeans showed up, why wasn't there a disease that the Incas had built up an immunity to that hammered the Europeans?

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If we ever met an alien civilization, would our diseases wipe them out and their diseases wipe us out? Kind of like what happened when the Europeans arrived in the Americas?

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Is pain tolerance more physiological (I'm less sensitive) or psychological (I can force myself to ignore it) ?

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Can we see trends in the evolution of our DNA that indicate what how we will change over the next 100,000 yrs? Shorter/taller, blind/better vision, extra/loss of limbs, etc?

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Where is the largest part of earth that is actually flat?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If smallpox killed so much of the Inca civilization when the Europeans showed up, why wasn't there a disease that the Incas had built up an immunity to that hammered the Europeans?	1
If we ever met an alien civilization, would our diseases wipe them out and their diseases wipe us out? Kind of like what happened when the Europeans arrived in the Americas?	1
Is pain tolerance more physiological (I'm less sensitive) or psychological (I can force myself to ignore it) ?	1
Can we see trends in the evolution of our DNA that indicate what how we will change over the next 100,000 yrs? Shorter/taller, blind/better vision, extra/loss of limbs, etc?	1
Where is the largest part of earth that is actually flat?	1