Make it a good one.

  • seeigel@feddit.org
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    9 hours ago

    Life will find a way. Going back can be used to create nuclear winter but even then, life will go on.

    To completely screw over the world, I would go into the future and acquire the source code for a general AI.

    Then the world can be locked down and robots can be built to abuse every human and sentinent being individually, for a very long time.

  • zxqwas@lemmy.world
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    18 hours ago

    Can I appear anywhere? Pop into white house or Kremlin during the Cuban missile crisis and say: I’m from the future, you must attack, or… Then travel back to the future without finishing the sentence.

  • esc27@lemmy.world
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    1 day ago

    Shoot Arch Duke Ferdinand. Few people even now about it today, but he was subject to a horribly mangled assassination attempt that many scholars belive would have set off a major war in Europe had he died.

  • ThePowerOfGeek@lemmy.world
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    1 day ago

    Go back in time and do something to prevent Vasily Aleksandrovich Arkhipov from becoming the Executive Officer on the B-59 Soviet nuclear sub in October 1962. He’s the guy who talked the Captain and the Political Officer out of launching the nukes when they thought they were being attacked by the US Navy during the Cuban Missile Crisis. His persuasiveness is generally considered to have avoided WWIII from starting then.

  • LouNeko@lemmy.world
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    1 day ago

    Go to back to the big bang. You presence alone will butterfly effect the earth out of existence.

  • MudMan@fedia.io
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    1 day ago

    You’re going to pretend we’re not on that timeline right now? I see your play, time traveller.

  • How much power do I have?

    If I could divert the asteroid that resulted in the K-T event, that’d drastically change history. It may not have stopped dinosaurs from eventually going extinct, but it’d have given them 33 million more years more to evolve, and would certainly have affected mammalian evolutionary history. Maybe, just maybe, raptors would have gotten smart enough.

    Ooh! Take back a lot of ravens. They’re almost smart enough already. Heck, I wonder if taking ravens back even earlier would be enough for them to evolve into something dominant. Problem is, they’re not particularly social, and I think that’s been our greatest advantage.

    Or: introduce modern octopus to ancient oceans.

    Stopping the K-T event is my favorite, though. It would absolutely have changed how life on Earth has evolved since.

    30M years between extinction events is about all you get, though.

      • Maybe? Like, how hard is it to put a Tsar Bomba on the asteroid when it’s a light-year away? Or, if it came from the Oort cloud, a thousand years before whatever nudged it in, nudged it in?

        I don’t know. Putting a bomb on a timer on an asteroid seems pretty simple. If we’re time traveling, we’re also space traveling, because the solar system was about a third of the way around the galaxy at the K.T. event. In comparison, the shift to the impactor 1ly away would be margin-of-error stuff.

        There were no constraints posted; no “you can only take a truckload of stuff”, or, “you appear on the Earth where that point was at that point in time”. I mean, if all you do is travel back in time 1 year without also traveling in space, you’re going to be breathing hard vacuum when you come out.

        So: I’m assuming:

        • I can choose where I come out
        • I can take anything I want with my - I’m not traveling Terminator-style
        • I can get my hands on a working Tsar Bomba before I go (that’d probably be the hardest, aside from violating the laws of physics)

        However, for the other ideas? What’s hard about transporting a murder of crows to the Triassic? I don’t even have to go myself.

  • froh42@lemmy.world
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    1 day ago

    My name is Friedrich Trump (aka Frederick Trump) and I already did that and even had a nice hump.

  • kibiz0r@midwest.social
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    1 day ago

    Bring knowledge of CFCs to a time when we’re able to make them but not able to detect the ozone problems they cause.

  • Miles O'Brien@startrek.website
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    1 day ago

    Go punt kick the first fish back into the ocean as it tries to waddle it’s fat ass out of the water.

    I know that’s not how evolution works but I can dream… Life would likely be vastly different given such a long period of time with something like that changing either way.