字幕列表 影片播放 列印英文字幕 So I was browsing the Web the other day and took a personality test, something like what your finger length reveals about you when I found out I can't be a genius because of the way my fingers are. It made me wonder. Why do your fingers have to be of different lengths? Anyways? I was pretty determined to find it out, so I did some research. It looks like evolutionary history still doesn't have a 100% clear answer to this question. They recently found a skeleton of a guy with a lump at the base of his hand from 1.5 million years ago. It means humans possibly had hands just like we do now. Back then, until then, millions of years before their fingers were long and curved, their palms were extra broad and their thumbs were small and weak. Now let me check in my large encyclopedia who has hands like that. It's chimpanzees. They can climb tree branches just fine and are perfect at knuckle walking. But there are certain things they can't dio gripping, squeezing and pinching are all off their talents list. So what made humans evolve and go from uniformly shaped fingers to what we have today. The most popular theory says they developed along with tools. I want to check it for myself. So I have this chimpanzee hand glove here. Let's try throwing a stone. There you go. Not super precise, but okay, Now let's try using an axe. Oh, I can hardly get ahold of it. So it's no surprise that had to change. Humans realized they needed better tools to survive, and that meant their hands had to become stronger and craftier to be able to both produce and use those new generation tools. The second theory is much like the 1st 1 it says humans needed to develop two kinds of crucially important grips. A precision grip and a power grip. If you've ever seen a picture holding a baseball, you've seen a precision grip. You can't do it with a chimpanzee hand because you have to hold it between the fingertips and the thumb. In a power grip, you rep all your fingers and thumb around something again. Humans had to master both the grips to be able to use tools, and you can't do either with same length fingers. The third theory has to do with the most basic form of self defense. You curl your fingers into your palm at the thumb on top for extra stiffness, and there you go. You just made a fist, and no matter how hard you try, you couldn't do it if all your fingers were the same size and length. So I see what this finger and thumb diversity is for. But what if we rewind evolution to a couple 1,000,000 years ago? A bit further? 00 look, dinosaurs now, not this far. Let's go forward again. Okay, here. So what if there had been some genius human who adapted all the tools to work just fine with the original type of hands? If that had happened, would be uniform finger species still, and we wouldn't know any different, so we'd be doing just fine. However, the same smart human or their offspring would have to redesign pens, scissors, keyboards, buttons and the list could go on for a long time because a lot of things were designed for the type of hands we have. But what if you or I were the exception among billions of others with the usual hands? In fact, This is not a science fiction kind of question. About one in 25,000 kids is born with something known as a trifle Langil thumb. It means their thumb has an extra bone and is just a long as the other fingers. Who this research has gone too far. I can feel an extra bone growing in my thumb. Thea. Other fingers. Air changing too. And now all of them are exactly the same length. Oh, that's kind of cool. I want to take a picture of it. Let me get my phone out of my pocket. Oh, my. It's suddenly such a challenging task. Okay, here it is. Unlocked the phone. I never realized how easy it was until it became so uncomfortable. It takes forever. And I went It takes my friend about this whole situation. I can't even I think I'll go grab a snack. But first I'll change into that new shirt. Wait, What? How do I push the button through the hole now? Maybe something with a zipper will work better. Oh, speaking of zippers, what do you personally like better buttons or zippers? Let me know in the comments. I'm normally team buttons but today is different. Anyway, that was a bad idea to I'll just wear a hoody. Ouch! My hair is a mess. Yeah, right. It takes practice to learn how to use the calm. Now. Hey, can someone please open that door for me from the other side? The knob clearly wasn't designed for guys like May. Thanks. Wow. Is that a coin on the floor? What if it's a lucky penny? Grandma drive. I can't pick it up. A peanut butter sandwich would help me eat away my sorrows. Well, of course, this jar just won't open now. Okay? I changed my mind. I'll have a ham sandwich instead. That's a delicious looking piece, so I'll slice it or I won't. Cutting things isn't my greatest talent at the moment. Well, I can always have some bread on the bright side. I don't have to do the dishes now. Something's telling me that that would be crazy. Hard as well. I think I'm going to leave a fridge note for my roommate to order a pizza or something when I get back. If only I could grip the pen right? I'll just draw smiley face instead. Well, time to leave for work. I don't know how I'm going to type on the keyboard today, but what if it works out fine? I don't have to grip on to anything for that. Oops. Almost forgot to put on my socks and shoes. I never imagined it could be that tricky. She laces now. I won't even try so grateful for slip ons right now, ready to go outside. So relieved. We have two locks and it's enough. Just a slam a shot. I wouldn't handle a key at the moment. I wonder where my car keys are. Oh, anyway, I am a responsible driver and wouldn't risk everyone. Safety. I'm getting into a taxi. I guess it would take practice before it can drive with my new kind of hand. Made it to the office. Hope no one will notice getting into the elevator. Let's let someone else push the button. Hi, Jim. O. Awkward. Mr Spencer wants to shake hands with May. Maybe he won't see. I'll just sit quietly at my desk. Let's try typing slowly, but surely it's working. I'll finish the report. I've been planning to hand in forever my hands. That's Mr Spencer, shouting the back already. So apparently my condition is contagious and passed through a handshake. Don't worry, Mr Spencer. It's going to be OK. Uh, now is that someone else screaming? No way. People are finding their new condition all over the office. It must be all those Mr Spencer shook hands with after greeting May. So what does it mean now? We can't even shake hands with other people to stop this. What am I going to say to my girlfriend? Okay. I started this and I will save everyone. Let me check my daily planner here. It iss a girl by the office building gave me this flyer the other day. Do you hear strange noises? Can you see? Impossible colors. Are all your fingers suddenly of the same length, huh? I never thought I'd need it, but never say never. I guess so. It's one s O s mystery. We need your help. Urgently Say no more were coming. Can someone open the door for the crew, please? This sound is getting on my nerves. Oh, no wonder. It's my own alarm. Looks like I fell asleep. Doing research in my hands are Justus. They always used to bay To be honest, I'm glad it was just a dream. It looks like having all fingers of the same length isn't that much fun. It would definitely take a ton of time to get used to it. Boy, I need to get a grip. Hey, if you learn something new today, then give the video alike and share with a friend and hear some other cool videos I think you'll enjoy. Just click to the left or right. Use any finger you like and remember, Stay on the bright side of life.