Can you solve the time traveling car riddle? - Dan Finkel
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- Опубліковано 20 вер 2024
- Practice more problem-solving at brilliant.org/...
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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.
Lesson by Dan Finkel, directed by Igor Coric, Artrake Studio.
This video made possible in collaboration with Brilliant
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"If the earth were flat there would be no way to solve this riddle"
Flat earthers : 💀
If we’re going to violate the time part of space-time with the premise, let’s break space as well. It’s wormhole time!
Exactly my thought!!!
if? The riddle makes earth round originally planned to time travel happening?
222 👍
The fact that we don't have any time traveler is proof that the earth is flat 👍
This has been the only riddle I’ve been able to solve without pausing or researching. Love these riddles
Same
Yep, same here. Feeling smart for once, haha
I would have been able to solve it but the way he explained it confused me so I was just sitting there lagging until the explanation. Or maybe the space time continuum is messing with me
Same
Same, though I got the South Pole correct for the wrong reason.
4:16 I love that reference to the other time travel puzzle. Good job, TED-Ed!
Oh yea
I imagine the professors from both riddles being rivals over whether cars or portals work best.
Beat me to this same comment :D
I guess he never actually got back home 😔
@@zingerific8209 nope
"Can you solve..." title made me clicked immediately
Same
Yup same.
Same, even though the answer is no
That's how clickbaits work ✅
rubix's compleks
Back to the Future movie time travel quote from Dr. Emmett Brown: "Don't worry. As long as you hit that wire with the connecting hook at precisely 88 miles per hour, the instant the lightning strikes the tower... everything will be fine."
Finally a new riddle! I appreciated that this one was different than the advanced mathematics that seem to have become de rigeur for the channel. Let folks' whose strengths lie in other areas feel like they have a shot at solving every once in a while! At least for this one I thought "gotta be something to do with the Poles" - any of the super intense math ones I'm just watching for entertainment purposes only 😅
My mind went for the north pole. But I saw that third rule saying it's about geographic directions and not magnetic and I thought it meant you can't use the poles
Facts
Oh I was thinking it's something to do with the curvature of the Earth, but didn't think of the poles cos they said not magnetic oops-
@@NabeelFarooquiThe reason they said that is because, if you use a compass, it doesn't point at the "North Pole". So the compass points at "magnetic north" and the actual top of the Earth is the "true north".
This is really great,they should make a movie based on this
And I predict that it would be very successful that it would have two sequels
Except they should make it more realistic. Like how going at 88 mph is required for the flux capacitor to work. They didn't even mention the capacitor which is what makes time travel possible.
There should also be a broken clock tower
@@gorochu4287 both for finding each location
And a big train time travel machine should also be added.
The unfortunate thing, is if you had time travellers go back to the past to do the same thing you did, that means paracausally whatever you did was not enough to stop Riff from becoming a tyrannical ruler, since if you did stop it, it would have been not a problem that they would have needed to solve.
Thankfully, there are other potential motives. Maybe they just remembered that they forgot something back in the past and went to fetch it.
In this instance, they can at least take solace in the fact that the collision is the likely reason they failed.
@@tylerduncanson2661 oop not another time loop like the tv show dark!
I think the future guys are from the timeline where the past guys didn't think about it at the time...
did anyone else notice the other time traveler from the triangle nodes riddle at the end of the video?
7-6-23
Yeah, cool Easter Egg.
@@michaelschlem2849 why'd ya put the date next to your reply?
@@SysFan808 7-6-23
Cause he and i are time travellers
same
I understood that reference
I’ve watched every Ted-Ed riddle on this page. And this is the only one I’ve been able to solve on my own and I was actually able to solve it almost immediately
Congratulations
Finally, a new riddle! Have been waiting for a long time for one. Can we have one every week? I just love these riddles that you came up with.
yeah
I’d love that
One of the only Ted Ed riddles I managed to solve on my own. Always the best feeling
I remember a similar riddle: an explorer walks a mile south of his base camp. Then he sees a bear, screams, and runs a mile east. Finally, he walks a mile north, back to his base camp. What colour was the bear?
A man builds a house with all four sides facing north. A bear walks by the house. What color is the bear?
@@kingwolf3044 no colour - i don’t think any live there
@@emeraldnickelAnd Antarctica is so damn cold that even a polar bear would die of hypothermia there.
And the answer to the original, is white, but could be a trick as it was never specified it was alive, so could be an unfortunate brown bear though it would be a good idea to go there.
Step 1: confirm you have green eyes.
Step 2: Leave to a better universe.
*The original version of this puzzle goes like this:*
*A man walks a mile due south from his campsite.*
*He encounters a bear, and immediately runs a mile due east. The bear is gone, so he then walks a mile due north to his campsite. What color was the bear?*
Pepperoni pizza!
14.52 squared!
Whit! since it happened at the poles
Well, he's probably dead since bears are much faster than humans and running from them triggers their predator instincts...
"Can you solve--"
"No!! But I will watch it anyway"
I'll be honest; I couldn't help but give myself a high-five to see what would happen. Would I have/Will I both time explode, would I time merge, or would everything else time explode or would time itself collapse? I would need to know. So I doubt I would have noticed the professor poof away or that the timeline needed to be fixed. Sorry everybody but good news, you are reading this so I never get the chance to time travel.
No, nothing like that. Your cells are constantly being replaced with new cells, especially when it comes to skin. So the skin cells on your older self's hand are not the same skin cells on your younger self's hand.
You'd just have matching DNA. That's all. Hardly any different than giving a high-five to your twin.
@@jerryhook5906 You calling me some kind of ship of theseus? Thems fighting words.
Wait, what if my older self -murdered- suicided my younger self? Would that break time?
@@jiwon.p It's unclear why this is even a problem; if the older one is around, they can just tell the younger one the answer.
As for the fact that no one has ever seen a time traveller before and lived, perhaps the timetravellers are made to dress for the era they are going too before leaving and use cloaking technology to remain unseen, making time travel is more of an attraction for tourists. People who claim to see ghosts or aliens may be catching hiccups or technical difficulties with the invisibility technology, like spiderman.
Or the timegate theory thing, if a time gate is built the earliest point in time that can possibly be travelled back to using the time gate is the moment it was finished making it impossible to have time travellers before the timegate is built.
1-check if you have green eyes
2-ask the time gates to leave
But not before saying OZO
It’s a good thing UA-cam’s staff is also helping fix the space-time continuum.
I literally only click these videos for the story
Could not agree more
Yep
This is the first TED riddle I managed to solve on my own!
The bridge riddle 😭
Finally a riddle after months🔥
This was the first TED Ed video I actually solved on my own, that was an awesome feeling.
Always give time to pause and allow us to think about it, really enjoy the riddles.
glad to see Ted-Ed is still making riddle videos.
The fact that they made this right when Back to the Future the Musical just went into previews on Broadway is so cool
This one is fairly obvious. It’s the same as the old riddle: “A man walks two miles south and three miles east. He shoots a bear and then walks two miles north, only to arrive at the same place he started. What color was the bear’s fur?”
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.
The answer to the riddle was easy enough, but it raises more questions. How are you going to transport the Deloreans to those two locations? Do you have time to transport them? How long do you have before you disappear? Will they even function in those environments? Is the professor restored after you merge the timelines?
As soon as I heard the directions, I loved this puzzle as a kid.
You mean you… time travelled to when you were a kid and showed yourself the puzzle? The video came out a day ago lol
@@dawsonsawyer4726
I had a puzzle book that said a hunter leaves camp and tracks a bear ten miles die south. The bear then turns and the hunter tracks the bear ten miles due east. The hunter then shoots the bear and drags it back to camp, a distance of exactly ten miles. The question is, what colour was the bear?
It was one of my favourite riddles as a kid. So not exactly the same.
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?
It's more of a simple lateral thinking puzzle. The math is just their finishing touch.
Yup, they never have any actual riddles, just Math problems with a story around it. Might as well be asking at what time will two trains meet.
This one is actually more of a geographical solution, with a small touch of math.
@@AmTrFilms Can't something be a riddle AND a maths problem?
@@Inkyminkyzizwoz Yes, but I don't think that simply giving variables in equations names and a backstory qualifies it as being a riddle.
4:17 I love the easter egg but wish this would be a sequel or some form of crossover just to make it more interesting
I thought that Slate Kanoli was going to be involved!
2:48 net work done is zero and displacement too 😂😂
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?
That's solving a different question from the one the video asks.
Yes, but the problem states the two paths must be at least 100 miles away.
One's at the exact north pole. 1 mile south of it you turn east, but no matter how far you drive there, it'll still be 1 mile north to the north pole.
The second is just above the south pole, where driving east will send you into a circle; it should be placed where that circle would be 1 mile. Roughly this would be at 1 mile /2pi, or about 0.16 miles north of the south pole (the direction doesn't matter, just pick the part with the best surface); you start 1 mile north from there.
Possible problems:
- you must make sure the surface is navigable. Particularly on the north pole, it has to be well frozen to support the car, aside from all issues of snow, ice etc.
- at the south pole we get a second problem. Here we must drive a full circle with a length of 1 mile, and a radius of .16 miles, or about 280 yards. If we're also supposed to get a certain speed with that (88 mph), given the ice and all that, this might pose some difficulty.
Bear in mind, in both cases the journey east is not in a straight line. You need to constantly steer on the same circle. So it most likely will require preparing a proper road. Finally, we'll also need to stock up on some weaponry and money... getting to both poles for a rather insane mission may require both.
"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*
Back to the Future movie time travel quote from Dr. Emmett Brown: "Don't worry. As long as you hit that wire with the connecting hook at precisely 88 miles per hour, the instant the lightning strikes the tower... everything will be fine."
Usually I give up trying to solve the riddles myself because I don't want to pull out paper and figure out the math. But I heard this riddle and was able to just happily go, "oh, you use the poles!"
Since the cars hover, could you theoretically do both laps on the north pole, a mile apart vertically?
That "Great Scott!" gave me goosebumps.
If my car needed a riddle to operate I'd definitely walk without issues whatsoever
I thought this was about time travel paradoxes...
1:49 *professors vanished*
Me: “Welp imma head out”
Me: makes the radius of the circle on the south pole as small as possible
Car: *turns into a helicopter*
The other past riddles, some I could solve but still understood most of them. This one here was quantum mechanics to me 🤣
Actually, I believe the easiest second point of start is the "limit" of the solution that the video proposes.
Start at any place which is 1 mile away from the South Pole: going south 1 mile brings you to the South Pole; going east 1 mile is now just staying still; so driving north 1 mile is bringing you back to your starting point!
Great Scott! This was heavy. And not due to any problems with the Earth's gravitational pull.
This is the first time I have ever been remotely on time for a Ted ed video
I saw "Can you solve...", and my finger clicked it before my brain knew what was going on.
0:03 Oh Scott is tight wow wow wow. Wow
I immediately went ‘GO IN A TRIANGLE’ 2:31 GUESS WHAT
This is only the second time I was able to solve a riddle before Ted-Ed told me the solution. Great riddle!
Great Scott, a BTTF reference!
The end of BttF was Doc saying they don't need roads. To me, I immediately thought of the gate on a levitating platform facing sideways in the sky and using the flying delorean with open air
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.
I remember hearing this riddle in a much more simplified form when I was a kid. “You see a bear and you run away in fear. You run a mile south, a mile east, a mile north, and you see the same bear. What color is the bear’s fur?”
Transparent!
4:00 "The small circles aren't actually practical to drive."
Well, we are driving around the North and South poles as if that's perfectly normal...
Fun fact: 18% of this video is an advertisement for Brilliant
teacher: This is important! You will use this in real life!
Using the formula in reallife:
This the only TED-Ed riddle i managed to solve
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The fact I was actually able to figure out the solution on one of these for once
I love how almost every Ted ed riddle has something relating to another riddle at the end.
4:17 Crossover with the Chrononodules Riddle
0:13 name reminds me of something
1:23 i stopped here. Because i know where you can drive south, east and north, and end up in the same spot. At the pole. Im not bothering to watch the rest. I usually find the comment section more interesting
You only solved half the problem.
They can do the one that works for the South Pole so easily because it doesn’t have to be a line of latitude. It could in theory happen anywhere on a smooth sphere
4:16 Time travelling intern randomly passing by.
I love the Ted Ed riddles
The question: *very popular interview question*
TedEd: imagine a time travel paradox.....
I wanna see this version of back to the future!
First time I've actually solved it without pausing, and on 2x speed
Can we get an F in the chat for their professors?
F. But the timeline was fixed so the professor should be fine
First of all, the professors disappeared at the end of the riddle, so I think that solves the problem of two people being in the same timeline. Also, if the cars float and gas isn’t a problem, then you could place the gate anywhere, you could get the cars on the same latitude, drive south then east, and just wait for the Earth to rotate the gate back in front of you and just drive straight because floating objects aren’t location-locked to the Earth. The details in this problem open up a lot of solutions for the problems
Finally a riddle I could solve because I learned years ago that you could get on the surface of a sphere a 180° triangle, which for all intent and purposes is what this video is asking for we to solve x)
Finally! A Ted riddle that doesn’t contain the words “prime number” in the solution!
In short the North and South Pole. The person on the North Pole has it easy, because they can just simply start and end at the northmost point of the North Pole. The person on the South Pole has it a little bit harder, but they do get an infinite amount of possible start-end positions. They have to find a place that is 1 mile north of a 1 mile long circle around the southmost point of the south pole. They can also start 1 mile of a 1/2 mile long circle, 1/3 mile long circle, 1/4 mile long circle, or in general a 1/n mile long circle. Having all these different possible starting positions are nice, but they are closer than 100 miles together which is why they can't both start at the South Pole.
But you can’t go farther south than the South Pole. Driving in any direction away from the South Pole would be driving northwards.
@@aycc-nbh7289 When I say South Pole, I mean Antarctica. So to rephrase it: "In short the North Pole and Antarctica.
The person on the North Pole has it easy, because they can just simply start and end at the North Pole.
The person on Antarctica has it a little bit harder, but they do get an infinite amount of possible start positions.
They have to find a place there that is 1 mile north of a 1 mile long circle around the South Pole.
They can also start 1 mile of a 1/2 mile long circle, 1/3 mile long circle, 1/4 mile long circle, or in general a 1/n mile long circle.
Having all these different possible starting positions are nice, but they are closer than 100 miles together which is why they can't both start at Antarctica."
@@TheRMeerkerk There don’t seem to be any rules against deviating from one’s path and traveling in some other direction before continuing the journey, but perhaps there may need to be little, if any, deviation if the trip takes one _around_ the South Pole instead of through it.
Tell your doppleganger they have green eyes. On the second day, they ask to leave.
Wow, I hope they make a movie out of this!
TED-Ed:Can you solve the time traveling car riddle?
Me: No but I'll try anyway
posing a "what are the rules of time travel" thought experiment with someone else (or future you) having "the same idea from somewhere else on the timeline" (like this one starts with) caused *yelling fights* in my office.
The only way you could ever meet yourself is if you were on a consistent timeline, meaning the older you would be cognisant of the time travelling escapades of the younger you so you would be doing so knowingly. If the older you was not aware that the younger you time travelled, you would be going back in a timeline where the younger you didn't time travel, so you would never meet. Choose life, a famous Qowat Milat once said.
I've known this one since I saw it in a magazine when I was a kid in the 80s (not including the BTTF trappings).
a time travel riddle and a roast at flat earthers? BRILLIANT!
The video forgot to say the cars have to go 88 mph during a lightning storm.
My solution was simple:
The person traveling to the past should put their gate on the North Pole and the person traveling to the future should put their gate 1 mile north of the South Pole. When they travel 1 mile south, they will need to spin infinitely many times at an infinite rotational speed to travel 1 mile east before going north again. Assuming the car isn’t a fixed axis, any part of the car not along the axis of rotation will have infinite speed, therefore slowing down time relative to the earth around them and ending up in the future 😎
4:16 the person with the glasses is from the other time traveling riddle. Thought we wouldn't notice, but we did
1:58 north and south pole
I love this video!
Although I am sad not to see the international metric system
Clicked so fast ngl
Lemme rizz up
Me: *scrolling through UA-cam*
*Sees TedEd Riddle*
YES! THE RIDDLES HAVE RETURNED!
even though I can't solve these riddles, it's always fun watching it
This is definitely one of he easiest riddles that have been presented on this channel. Still enjoyed it though!
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
Why not drive a triangle with the base and height both exactly one mile? The rules don't say you have to only drive south while in the South segment, or that you can't drive more than one mile in each direction.
I see time travel, I click faster than the speed of light...
comment: 52 mins ago
video: 37 mins ago
by jove, you've done it! but how would you click it before it was there?
Great Scott!
As a person named Scott, the intro quote was very inspirational (my name isnt Scott)
You seem great, Scott.
@@TEDEd :D
I heard this one initially as a riddle: An explorer leaves his tent, walks a mile south, then a mile east, then a mile back north, arriving back at his tent, into which a bear has crawled. What color is the bear's fur?
Transparent!
Wait... if the professor is still alive in the future, he must have been able to be revived from the time line
The circles get so tight they're impractical to drive? They're driving their cars in the North and South poles.
Understanding the question is harder than the actual solution