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  • What will humans look like in 10,000 years?

  • What about in 1 million years?

  • Will we look like this guy?

  • Probably not.

  • But we'll definitely look different than we do now.

  • It took roughly 6 million years

  • for humans to become what we are today.

  • And modern humans

  • have only been around for about

  • 12,000 of those years.

  • Even in that short period of time,

  • humans have evolved slightly.

  • We've become about 10 cm (4 in.) taller,

  • and now we can eat dairy foods after childhood.

  • So if those things can happen in 12,000 years,

  • where might we be

  • hundreds of thousands of years into the future?

  • First, we should probably figure out

  • exactly what evolution is.

  • Evolution is all about changes

  • in the genetic makeup

  • that happen to a species over time.

  • Species with more advantageous traits

  • will tend to have more offspring.

  • So those genetic traits will tend to

  • carry on to later generations.

  • For example, giraffes with longer necks

  • who can reach more food

  • will be able to survive better than giraffes with short necks.

  • And they'll be able to have more babies,

  • who will likely have longer necks, just like their parents.

  • And as time goes on,

  • the short-necked giraffes will die out,

  • and the long-necked giraffes are the only ones left.

  • That's why all our giraffes have long necks today.

  • So how does this apply to humans exactly?

  • Well, evolution, in this sense,

  • is actually very hard to predict.

  • In the world we live in,

  • we don't need to worry about survival of the fittest.

  • Technology has effectively canceled a lot of that.

  • You no longer need to worry about

  • being the fastest or the strongest.

  • This isn't 100,000 years ago,

  • when you had to fight for your food.

  • Things like houses to live in,

  • and clean running water,

  • make surviving so much easier.

  • You never think to yourself,

  • "how am I going to survive today?"

  • But that's something our ancestors

  • had to worry about constantly.

  • It's not guaranteed that

  • 1 million years from now,

  • humans will be stronger, faster,

  • and bigger than ever before.

  • After all, having children today

  • is generally decided by culture and personal choice,

  • rather than the need for our species to survive.

  • Our future

  • will be decided by the traits

  • of people who have children,

  • and how many children they have.

  • If people who are naturally overweight

  • and have health problems

  • are the only ones having kids

  • over the next million years,

  • then that's how the human race will end up.

  • But,

  • we might not need to worry about any of these natural occurrences.

  • Instead, we could become completely

  • fused with technology before any of this happens.

  • Cybernetic arms,

  • brain chips, and laser eyes

  • could all become possibilities.

  • Not only that,

  • but we also might be able to

  • alter a baby's genes before they're born,

  • completely getting rid of evolution altogether.

  • This would allow us to get rid of diseases,

  • and any other genetic traits that might harm us.

  • But if we didn't have this luxury,

  • and we had to evolve the old-fashioned way,

  • there's a few things that might happen:

  • we just need to look at how modern humans have evolved

  • in the past 12,000 years.

  • We know we've been getting taller,

  • most likely due to nutrition,

  • and that our brains have been getting smaller.

  • But don't worry, we haven't be getting dumber,

  • our brains are actually becoming more efficient.

  • In a million years

  • we might be incredibly tall humans with

  • tiny heads.

  • Does that remind you of anything?

  • At the end of the day,

  • human evolution is incredibly difficult to predict.

  • That's because,

  • evolution is primarily based on our environment,

  • and who knows what might happen to the Earth

  • in the next million years?

  • We might need to evolve to survive fires,

  • as the planet will become so incredibly hot.

  • I so hope I'm not around for that.

  • Or, in the next million years,

  • we might live on other planets, like Mars.

  • Humans would evolve to look completely different there,

  • as they'd be living in entirely different conditions than here on Earth.

  • Wondering what living on the red planet would be like?

  • Well, that's a story for another WHAT IF.

What will humans look like in 10,000 years?

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もし私たちの体が進化し続けていたら? (What If Our Bodies Kept Evolving?)

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    林宜悉 に公開 2021 年 01 月 14 日
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