Comments by "zenith parsec" (@zenithparsec) on "Kurzgesagt – In a Nutshell" channel.

  1. Can? No. Should? No. Must? No. Will? No. But we should develop the technology to blow up the moon. But hear my argument all the way. Blowing up the moon is REALLY REALLY hard. The amount of energy you would need to actually blow up the moon is mind-blowingly enormous. This video showed that a nuke larger than the biggest ever detonated on earth would just leave a crater on the surface. We definitely can't blow it up. We shouldn't do it. But if we could do it, imagine what else we could do? Developing the technology to blow up the moon would mean we can defend ourselves from any asteroid, send any sized spacecraft to any distance at virtually any velocity (less than the speed of light, obviously), and create objects of virtually limitless size. And if we can do any of those, we can probably solve little problems like all the ones we currently have on earth. We're a lot more limited today. We should develop the tech to blow up the moon. But we absolutely should not use it for such a pointless task: we should use it for all humanity. Thank you for listening,
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  2. Remember, because nukes were invented, if WW3 ever happens, we probably wouldn't be learning about it in history class ever, as it would likely be civilization ending.
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  3. This was a fail in terms of marketing a new "thing we made". The transition from content to selling was too abrupt and completely turned me off. 👎
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  4. Any method for predicting "when will the last human be born" assumes that there will be a a last human. What if humanity survives until the end of the universe, but due to all the time we've been around we'd already worked out how to make another one? We could probably last forever then. In that case, there will never be the last human.
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  5.  @h.t.awesome3822  You watched the video, right? If a few million years is enough that humans have changed into a different species, then how much more will our understanding of the universe also have changed? Look how far we are in front of 10 years ago. and 100, or 2000, or 30000 years ago. This is us is in just a few thousand years. The end of even black holes for energy isn't due to happen for easily understood period of time. The number of years a 1, with somewhere between 100 and 106 zeros after it. (That's the estimate for how long it takes for the black holes to evaporate based on a couple of models.) That's such a different scale of time for existence than anything has had, ever. You saw the population growth, and the technology growth in the video. That was all in less than 100 thousand years. The time to the beginning of the universe is 100 thousand years, except for each year you have 100 thousand years. The time from now, until all the black holes will evaporate is around 10 with 100 zeros. That's like the example with 100 thousand years inside each of 100 thousand years, except, it's a lot bigger. First we need some names... the time between the big bang and now, we can call "BBTime". And let's say "to square" some time is to make a new length of time which takes the old length and replaces each year with the entire previous time. This makes a new length where the total number of years is squared from the earlier one. It's not some mystical "time squared " anything, just a way to imagine it. Take BBTime, and square it. Then square that number (so you put the square number in the square number of times.) Then do it again. Even that number is brain destroyingly big, but we're not even close. That number only has 82 digits, and we need over 100. So we just replace each of those years with the number of years in BBTime. The number of years that have already been since the beginning of time. So... perhaps we have enough time to work out how to evade the heat death of the universe. It's impossible to predict.
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