SCIENTISTS have built the world’s first time machine — sort of. Working with electrons in the bizarre realm of quantum mechanics, they first created the equivalent of a break for a game of pool. Th…
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I’m sure pool players all over the world are waiting for a chance to do a shot over.
Imagine being able to press a “do over” button?
If one could imagine it, how far back would you have to go?
Could one start completely over?
And, if such was possible, what give you any confidence that you could avoid your past “mistakes”?
And what if your current outcome was the “best” of all your possible choices, could you recover back?
A troubling thought experiment fraught with problems.
Like in my youth, I once left the Engineering Building, turned left on Broadway, and walked to the subway at 242nd street with my friends to have a beer at the Pinewood. So instead of studying, I had a hangover. To avoid that “mistake”, I decide now in retrospect to turn right to go to the 231st subway station and, when crossing the street, I’m killed by bus.
See what I mean, if we consider “time travel”, we don’t get to see what’s down the road when we take any particular fork in the road.
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