Besides the glaring grammatical errors, this reads more like a synopsis than a story. The tone was too conversational. It's vague, meandering, and leaves huge holes in the plot.
When did Frank tell Tobias about being in a mine or that he'd traveled back in time? You never mentioned what town they were in, but Frank says they're in Washington DC, I'm sorry, that just doesn't make sense. These guys not being in a little cage with a scalpel in their chests instead of being given a million dollars apiece and an island of their own is beyond belief. The bit about Tobias going back in time and becoming his own father is very oedipal, but the capsule says they were from 2405 and this experiment happened in 2105 at the latest. So, where are the extra 300 years?
If this is the first thing you've written, I'll call it a good first whack. Otherwise, practice practice practice.
Edit: D'oh! The story says 2140, not 2405. I'm big enough to admit my error.
What will it take to show you that it's not the life it seems? I told you time and time again, you sing the words but don't know what it means
