quote:
Originally posted by John
no-one came 
so either time machines won't exist in 50'000 years or no-one will read my message 
i hope it's the first option 
If time travel does exist in the future, then I think that
a) It will be heavily regulated to stop people from going back and changing the past to alter their lives, which would mean not being able to go see you because if you met people from the future, it would change your attitude, and you may do things differently.
b) Time exists in trillions upon trillions of time lines, everything that has more than one option happens in a different timeline, so for every action you take, there are infinate timelines where you took a different action instead. And the further back in time you travel, the further away from the timeline you will be. And so if they went back in time 50,000 years, they would end up in a timeline completley different from this one.
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