LogFAQs > #929638574

Also, channeling lightning, or knowing when lightning will strike would not neccesarily always be hard.

It was in the first one because they were not prepared and had no prior knowledge etc, but Doc could have done research into lightning storms etc after the events of the first movie, just in case he got stuck in any set time. In addition he could have done research in how to actually GENERATE lightning strikes in any severe storm, and ways to capture use it as needed as well.

Meanwhile time travel I believe is actually possible, and does not create a new time stream etc. I believe everything flows in a logical progression and can be determined with enough information in advance (you can predict the future with 100% accuracy if you know enough). You can also tell what happened in the past the exact same way.

But what about time travel?

I do think time travel is possible, but it doesn't work like most thing, you don't actually move forward or back, but instead you change the universe around you to a previous point, everything is still moving forward in a logical manner, that manner is just directly affected by your time machine, reverting it to a past state.

In such a case, any time they traveled back, they would revert everything into that previous state, then they could make any changes they wanted, and move forward again would cause those changes to go into effect (unless other changes were made before they went forward or the changes they made became impossible to alter).

This works VERY well with back to the future, since it would directly explain the reason why marty going back and making changes only went into effect after certain things were no longer possible to fix, or he left the time without changing them.

Basically when marty went back, he made changes that would cause him not to exist in the future (if he went back to the future), and the only way to avoid not existing anymore after the point of him making those changes, was to reverse them and ensure he would still exist again.

When you go forward in time, all the normal rules apply and the universe just progresses as normal, you are just jumping forward through a bunch of steps, to where the universe would be logically after so much time (or steps...which is all time is) had passed.

It's all logic and math, and it works quite well with Back to the future.
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