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!xkcd@lemmy.world

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What if you made a jetpack using rifles?

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What if you printed all of Wikipedia?

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How long would you survive with no DNA?

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What if you drained the oceans?

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Can you power your computer by typing?

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What if everyone on Earth was in the same place and jumped at the same time?

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Could you swim in a spent nuclear fuel pool?

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What if ALL the sun’s power was focused in one place?

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Could you use a laser as an umbrella?

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What if you tried to hit a baseball pitched at 90% the speed of light?

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