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That’s so cool! I wonder how long it took to make the entire contraption. It looks like hours. Also, I wonder how many video takes it took for the machine to work perfectly. Probably a lot!

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That was so cool. I wonder how long that took them to set up. It was so cool how the marble moved so much and hit so many things and then finally fell in the cup.

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That was awesome 👏. I’m curious how long it took them to get it right.

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The person who made that must have known a lot about physics. You would have to make a lot of calculations, and do lots of test runs. I wonder if they needed a marble with specific weight to make it work.

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That is so cool! I wonder how long it took them to master the contraption and how long it took to build.

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Dude, that was AWESOME. I wonder how the person knows how to reset that thing

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Honestly, I've seen videos like this before and this isn't really that exciting. Though, I am curious about the amount of attempts it took to angle everything correctly to complete this contraption.

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I wonder how they came up with the idea for the contraptions and how they built them and I wonder how many try’s it took them.

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Wow! That was so cool! I have to know how long did it take to put it all together? Also how many failed attempts did they take before they got it correct?

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I wonder how longing it took them to make that thing

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That was so cool. I wonder how long it took to make this contraption. It was also pretty cool that one ball made it all the way to the end.

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Cool (⌐■_■)

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It was so perfect, it didn’t even mess up! It was just so cool. I wonder how much times it took to perfect it without the contrap messing up. I also wonder how long it took to build the long contraption. I wish I made something like that because of how amazing that was. If I could I watch that video many times.

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I am blown away by that Monday curiosity! I bet it took him or her a long time to  create this! I wonder how they got all those calculations correct. That also wasn’t just an easy course it was super challenging! I also wonder how long it took that person to create this!

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It’s so cool I used to watch these all the time it’s all just a ton of timin. I wonder how long it takes to make one!

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I like how the obstacles were bouncing the make back to where it states and then another marble moved it. I also like how how it went through tubes and then hit the card then the marble went into the cup. I wonder if they would use different obstacles if it were a longer course.

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That was so cool! I wonder how long it took them to make that?

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That was really interesting. I wonder how long it took to make, and how many trials they had to have?  How did they come up with the idea? My favorite part was near the ending with the card. I think it would be cool to create a machine like that.

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I’m extremely impressed! That track had so many parts to it, it must’ve had to have so many test runs! I wonder how long it took to make it all work together like that, and I wonder where and how they got all the perfect materials for it. I’ve seen a lot of marble tracks and stuff like it in my life, but this is by far the best. Whoever made this is a genius.

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That was amazing. It looked like such a complex piece. I wonder how long it took and how many tries it took to make it perfect. I also wonder how many wood blocks and marbles it took to make the whole thing. I’m curious as how they knew where to put the wood blocks and marbles and other strange materials you would never find.

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I think they used a bunch of magnets because some of the really big balls were attaching to the sticks and it must have been magnets. I wonder how long it took and how many tries it took to predict where the ball would go after it was launched or hit. I’m mesmerized by this.

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That was so cool! It was really interesting to see how they used each little piece a different way. I am curious to know how they got each piece to lay in a position that was just right and how they know to put it there. I am also curious to know how long it took them to prefect the track and where they got their inspiration from.

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That was amazing I wonder what inspired them to do that and how many tries it took to get it to how we saw it in the video. I'm wonder what the cashier thought when they bought all this supplies.

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That is awesome! This would have to have had a lot of trial and error. If one small thing messed up they would have to fix it reset the rest of the stuff and fix the stuff a head of it as well to make sure it still lines up.

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That was cool how they were able to set that all up I wonder how many tries it took them to get it perfect. I also wonder how many marbles it took them. This shows that the human mind is so creative .

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OMG! That is so cool. Everything was lined up so perfectly. This had to have token about 1000 times to perfect this. I wonder how they made everything stay in place.