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zakruti.com » Knowledge, science, education » TED-Ed
Can you solve the time traveling car riddle? Dan Finkel

Can you solve the time traveling car riddle? Dan Finkel

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Rating: 4.5; Vote: 2
You and the professor have driven your DeLorean back to the past to fix issues with the spacetime continuum caused by your time traveling. But another DeLorean appears with older versions of you and the professor. The professors panic and explain that the universe could collapse now that you re both in the same time and place. Can you merge the timestreams and travel home? Dan Finkel shows how.
Date: 2023-07-06

Comments and reviews: 16


It's the poles. It's the north and south pole (kinda. North pole is easy, start there, drive south one mile, drive east one mile, then drive north one mile. In the south, you'll need to travel in a circle that has a 1 mile circumference, which using the relationship C = pi 2r means your circle will be about. 159 miles north of the South pole, so just pick any point 1. 159 miles north of the South Pole, drive down 1 mile to the circumference of that circle, drive 1 mile east and end up back where you started, then drive north 1 mile.
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What if you start exactly on the north pole, drive towards the other pole in a straight line (doesn't matter along which axis, which is going south, then east (you make a perpendicular turn) then north (which is towards the pole) you end up exactly in the same spot
Dooesnt fully solve the riddle though

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Couldn't we just drive to the South Pole and do the whole sequence flipped? If it's the geographic and not magnetic North isn't it arbitrary whether we actually start North or South as long as we complete the circle in order?
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The universes would collapse now that you're in the same time and place
Me: Drives a hook attached my car at 88 mph into a cable attached to a clock tower just as it's being struck by lightning

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I don't really lie these riddles. The conditions of the senecios the create are too specific and they all involve too much math for my taste. These aren't even riddles, just glorified word problems.
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Kinda easy if you know that lines of latitude are circles. I think the real question is how do they sync up their watches given that relativistic effects will mess with their Timing.
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Well The riddle is logical but
The time travel thing the professors vanished
And many more things like changing the past is illogical ( assuming that time travel is possible)

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This riddle was easy to solve once you read the third rule about the directions not being magnetic, immediately realize it had to do with poles and the rest was child's play.
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I knew a version of this riddle: I travel 1Km south, 1Km east and 1Km north. To my surprise I am at the same point. I see a bear coming to me. Which colour is the bear?
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Honestly if the professor did not come to the idea that something like that could take place then I believe he shouldn't be working in that field
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Wait Why would we both drive 88 mph? That seems a little sketchy, driving around the poles. Now I m totally lost. Run me through it again.
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Let me guess? This is a Riddle that has nothing to do with a Car nor Time Travel, but in actuality is about having to do Math?
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Let me guess? This is a Riddle that has nothing to do with a Car nor Time Travel, but in actuality is about having to do Math?
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Can someone explain to me why the car can't go South at the South pole and do the same route as the car on the North pole
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The other past riddles, some I could solve but still understood most of them. This one here was quantum mechanics to me
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The other past riddles, some I could solve but still understood most of them. This one here was quantum mechanics to me
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