I think it's unfair that we can't time travel.

I'd like to see how the world, at least earth was created, how the human race evolved, what will happen to humanity a billion years from now etc
I'd like to know for sure, I'd like to be certain. Not some scientific theories.
It's frustrating for humanity to have brains and be this limited! It's the lack of knowledge that creates the religious cacophony, pseudoscience, racism and all scourges of this earth.

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kayoshin · 41-45, M

Let's assume for a moment time travel were possible. How would you establish your location and the location of your destination? You have to understand there is no inertial reference point in the universe: everything we know or can observe is moving and never stops. So you have no way of knowing where the Earth was in the past except in relation to other things around us not those things are also in movement and we don't have Something to relate them to since we don't have an universal constant (the speed of light doesn't help). Even so let's assume you solve that somehow by finding a fixed point in the universe then you hit another problem: if you travel to the past it's not your past anymore because you changed the universe by simply being there in the past so it's your future and everything else happening is also a future not a past as they are consequences of what leads to the technology that allows you to go to "the past". Another larger problem is that the past doesn't exist. You are not leaving behind copies of yourself that sit neatly waiting for you to visit, that is just a sci fi childish way of thinking about time, time is just how we measure change and you change you don't multiply your presence just change location. To actually travel back in time and find something there you would have to reverse change but since everything in the universe is connected you have to reverse the movement of all the universe except yourself ( because if you reverse yourself too no one would ever realise time was reversed you included). So if you did all that you are always leaved with the issue that every time you go back to explore your past to explain to yourself "why" you would create a new events that your future self would not be able to explain and find the need to travel to the past to elucidate and... seems like an endless loop of frustration unless your travels result in humans never reaching the level of technology to have time travel which would be a paradox because then how would you travel to the past in the first place?

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kayoshin · 41-45, M

If it's any consolation, every time we look at the sky we look at the past. The sunlight we see is from 8 minutes ago, both the sun moved and the earth moved since then, the nearest stars are about 16 lightyears away so every time you look at a star you're looking at least 16 years in the past... And so on. You're constantly looking at things that are not where you see them anymore.

eMortal · M

@kayoshin "If it's any consolation, every time we look at the sky we look at the past. " pretty simple yet true fact.
Let me take a long time and think. Maybe one I'll come up with something.

kayoshin · 41-45, M

Sure, who knows maybe you solve it. Another possibility would be that our understanding of physics is wildly wrong and that there are big shortcuts to manipulating matter that we can't even imagine and that would make it possible but at this point that's like saying "a wizard did it".

cherokeepatti · 61-69, F

Who says we can’t? Most of us just don’t know how.

Ian123 · 61-69, M

It would be nice to time travel, it may be possible when you get to Heaven

SW-User

Wish I could change the past

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