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Time travel is an extraordinarily popular pastime. Or at least it would be if it were possible. Evidently it isn’t, though; as Stephen Hawking once observed, we never encounter any tourists from the future.
To make his point, Hawking once held a party for time travelers from the future, but nobody came. Of course, he didn’t post the invitation until after the date of the event, in order that only people from the future would know about it.
So maybe there’s a flaw in Hawking’s experiment, based as it was on deductive logic. After all, it’s easy to come up with explanations for why his invitation went unnoticed. Maybe by the time that time travel is invented, everybody has forgotten about Hawking, or YouTube has gone out of business.
On the other hand, perhaps time travelers just want to keep their existence a secret. But even highly trained supersecret time travel agents might slip up occasionally and accidentally reveal their future origins. Like for instance, by typing Comet ISON into Google before that comet had even been discovered. But even if they did, who would ever know?
Source:
Google search fails to find any sign of time travelers | Science News
To make his point, Hawking once held a party for time travelers from the future, but nobody came. Of course, he didn’t post the invitation until after the date of the event, in order that only people from the future would know about it.
So maybe there’s a flaw in Hawking’s experiment, based as it was on deductive logic. After all, it’s easy to come up with explanations for why his invitation went unnoticed. Maybe by the time that time travel is invented, everybody has forgotten about Hawking, or YouTube has gone out of business.
On the other hand, perhaps time travelers just want to keep their existence a secret. But even highly trained supersecret time travel agents might slip up occasionally and accidentally reveal their future origins. Like for instance, by typing Comet ISON into Google before that comet had even been discovered. But even if they did, who would ever know?
Source:
Google search fails to find any sign of time travelers | Science News