Which pill do you take?

so id be starting over in 77.

work my arse off cutting lawns and other stuff and drop my $3000 saved into MSFT. Take some of that, start up Yahoo. Sell it, Start up AMZN.

Profit.
you're conveniently overlooking the butterfly effect - you have no idea what effect your first action in the different timeline would have - you could mess around and creating a superbowl win for the Falcons
and that we cannot have