Maybe we overestimate how much importance people in the distant future would place on events of the 20th century. If someone gave you a time machine today, would your first thought be "Thank God! Now I can go back and finally stop Cromwell's invasion of Ireland!" ? The way I see it, there are many possible explanations for the lack of time travelers:Raphael wrote: ↑Tue Mar 24, 2020 10:06 amOne general problem that I have with time travel stories is that IMO, their authors usually don't realize just how common time travel would be if it were possible. You wouldn't just have one guy or gal travelling back in time to kill Hitler; you'd have hundreds or thousands, or perhaps even millions or billions, of people trying to kill, or prevent the killing of, everyone who ever played an important role in history, had descendants who played an important role in history, or might have played an important role in history in an alternate timeline. The time and place of every major, or even minor, historical event would be completely overrun by time travellers trying to influence that event. Time travel stories usually don't account for that, so I have problems with accepting time travel even in a story. You might get around that problem by making time travel something accidental and impossible-to-control, though.
1) As I say, they all see the ancient past as a foundation, not a tragedy to be averted (Who would stop Hannibal at Cannae?)
2) People in the future are all idiot teenagers who only care about events of the last two weeks (that is, the party one week before the invention of the time machine is full of people trying to get Stacy's cyber-phone number).
3) Time travel is expensive, so people only use it to rig the space-stock market.
4) Cause and effect become increasingly unwieldy over long periods of time, so it's impossible to predict what impact killing Hitler will have, and no one is stupid enough to try it.
5) Time travel was invented by racists, so everyone feels weird doing it.
6) There was an easily preventable industrial accident at the time travel facility the day they tried to kill Hitler, so now everyone assumes that time travel is bad and unsafe. Bonus points if the time travel facility has large white cooling towers to vent scary-looking steam.
7) Time travel is illegal, and the enforcers have access to a time machine, so there's no getting around them.
8) There are oodles of time travelers constantly changing the past. Our timeline, Hitler included, is the result of their efforts. We see them walking around form time to time, but they figured out they can dress like homeless people and no one will pay them any attention.