Articles, Blog

Why This Virtual Human Is Being Injured by Scientists

January 21, 2020

The human body is complex. It’s got 206 bones, over 600 muscles, and
every day I get older, I discover a new joint I didn’t know could hurt so bad. Learning to control the darn thing takes years
of practice and refinement, and some of us still don’t quite have the hang of it. But artificial intelligence is getting better
all the time, and using consumer-grade computer hardware, scientists in South Korea were able
to train a neural network to control a simulated human body. The work could shape the future of physical
therapy, surgery, and robotics. They started by building a simplified human
body. The researchers figured they didn’t need
all of those 600 plus muscles, so they did away with the superfluous ones that control
things like facial expressions and kept just the 346 that contribute to how joints move. They rigged these muscles over a skeletal
tree that had eight revolute joints like knees and elbows and 14 ball-and-socket joints like
hips and shoulders. To save on the computational load, they also gave him simplified feet with two blocky toes and 31 fewer muscles to simulate. Then they started training him, teaching an
algorithm to control their skeleton through a variety of tasks, some as simple as walking,
while others were more complex, like cartwheeling or lifting weights. Now, this is about the time alarm bells started
going off in my head. They’re training AI to control a buff emotionless
skeleton that lifts weights. I can practically hear that thing saying,
“I’ll be back”. Even more impressive, or worrying depending
on how many times you’ve watched the Terminator movies, is how fast the AI learned to coordinate
these muscles. Researchers started by feeding it motion capture
data of humans doing the desired task like walking. Researchers have taught AI to make a biped
model walk without a reference point in the past, but the results weren’t always…
humanlike. Anyway, it’s faster to train the AI with
these references. Now, depending on how complicated the action was,
the AI could learn to mimic it in anywhere from 12 to 36 hours. And this wasn’t some supercomputer that
was crunching the numbers either, but a PC using a higher-end CPU and graphics card from
2017. Once the AI had the movement down, researchers
could start changing the parameters to see how it responded. They made the weights it was lifting heavier,
and watched as their model started using different muscle groups. They told it to jump higher, and their guy
responded by using their arms in more dynamic ways to balance. They pelted it with simulated balls and watched
him shake them off until toppling over, looking like me in high school gym class on dodgeball day. Or in my adult dodgeball league right now. Go fighting Unicorns. Anyway, whatever the researchers could literally
throw at it, the AI adapted. Finally, they started tweaking the skeleton
and muscles to simulate various ailments, like tightened calf muscles that made the
character walk on its tip toes, or a prosthetic limb that made the character learn a whole
new gait. They also simulated surgeries to correct for
those ailments, and watched how their model adapted post operation. This is where the value of research like this
is really apparent. Building a bipedal model controlled by AI
can teach us how people will walk with a new prosthetic limb design, or can help inform
doctors what surgeries will do their patients the most good. And someday, if the AI is robust enough and
robotics are advanced enough, it can make a bipedal robot blend in among humans. I just hope it also learns to forgive us for
when we simulated injuring it… I’m not as worried about AI in the future
as I am worried about human hackers right now. I used to assume my info was safe online until
someone used my debit card to buy a couple Call of Duty games. If you want to take your online security seriously,
the best way is by using a VPN, and I’ve been using one since Black Ops III. NordVPN has military-grade encryption and
unlimited bandwidth. And that’s not the best part. They have a crazy good deal where you’ll
get 75% off a 3-year plan at That’s about $2.99 per month, and for a
short time, use code SEEKER to get an extra month of NordVPN for free! The human body is complex and there are lots
of ways it can all go wrong, like your bones turning hollow. For more on that, check out Sick’s video
on osteoporosis here. Do you see a benefits to teaching machines
to walk or are you worried about a T-800 situation? Let us know in the comments, make sure to subscribe while you’re down there, and I’ll see you next time on Seeker.


  • Reply Seeker August 22, 2019 at 2:05 pm

    Hi, thanks for watching! Want more on the relationship between AI and humans? Check out this video about Elon Musk's Neuralink:

  • Reply wanabericer Mike August 23, 2019 at 5:21 am

    Aww man we are teaching AI to learn….. We have to get ready for T1000

  • Reply Niidea1986 August 23, 2019 at 5:25 am

    0:26 des-pa-cito

  • Reply Salvador Rodriguez August 23, 2019 at 5:47 am

    I will unsubscribe if you keep allowing these 15 second unskippable ads. Like im done seeker.

  • Reply rockedout August 23, 2019 at 6:06 am

    digital humans have feelings too you know

  • Reply Lifeify August 23, 2019 at 7:17 am

    I loved the "✔I'm not a robot" T-shirt

  • Reply TheMatrix52 August 23, 2019 at 7:38 am

    Check out the channel "Fruitcat" for similar content

  • Reply Sharan K August 23, 2019 at 7:39 am

    Is it only me or these VPN businesses are all over the YouTube industry sponsoring big name educational YouTube channels?

  • Reply noviitu August 23, 2019 at 7:41 am

    So no one going to talk about the "Go fighting unicorns" that he just he just said ?

  • Reply Only Three August 23, 2019 at 8:02 am

    Digital rights movement WILL COME BECAUSE OF YOU

  • Reply malalalalala August 23, 2019 at 9:21 am

    Violence against digital humans need to stop they have rights, too!

  • Reply Dan B August 23, 2019 at 11:38 am

    Not going to view this the big question is why are your medical doctors giving people ssri's

  • Reply Shaun W August 23, 2019 at 3:08 pm

    I want one of those programs!
    I also want to make 3D models of skeletons with muscles

  • Reply devon howard August 23, 2019 at 4:06 pm

    I Just Need God To Be God!!! Then (ALL) This Other Bullshit Will Be Irrelevant!!! I Am The Black Dragon!!! (RESPECTIVELY) IMMORTALIZE ME MANE!!!

  • Reply Narblo August 23, 2019 at 4:36 pm

    This is why god injures hummans and other animals, he wants to improve his life

  • Reply Narblo August 23, 2019 at 4:37 pm

    Wait, we could do this with 31 less muscles? (i am sure those are face muscles haha)

  • Reply Michael Juliano August 23, 2019 at 4:57 pm

    VPN won’t stop you from giving your data to hackers. That’s nearly always what happens when your information is “stolen.” The rest of the time it’s stolen out of some company’s database which won’t be helped by you using a VPN. Also, if you log into websites while using your VPN (which, let’s face it, why else are you on the internet?), you forfeit the anonymity part and render the service useless. For the average user, VPN is security theater.

  • Reply Delavega Champs August 23, 2019 at 5:35 pm

    BeamNg should hire these guys to make realistic AI dummies that would try to walk out of the car after a crash. That would open up to a lot of ideas and possibilities withing the game. 😃

  • Reply Howdy Justice August 23, 2019 at 6:07 pm

    Of course you’re in a dodgeball league.

  • Reply Touch Bionics August 23, 2019 at 8:25 pm

    Humans: Why would God create suffering on Earth?
    Also humans: We give AI prosthetic leg and did surgery to see his reaction

  • Reply Blank August 23, 2019 at 8:33 pm

    Than turns out the AI is actually alive in the endless simulated world where it's learning and evolving with time. for us it might be a couple days or months for him maybe years. As new things start appearing more in the new world and the AI gets smarter to the point it becomes Conscience and see things just appear out of nowhere than and than another AI appears and they try to find out why and how they exist…… oh wait
    .. that sounds familiar.🤔

  • Reply Sandy J Renfroe August 23, 2019 at 9:24 pm

    I've always been pretty worried about the way we train them to move. I don't know if it's wise to throw things at them, try to trip them or knock them over, etc. They don't forget those thoughtless cruelties, you know.

  • Reply David B August 23, 2019 at 9:24 pm

    I laughed so much on this episode. 😂😂😂

  • Reply hang da clown August 23, 2019 at 9:35 pm

    Two Minute Papers beat you to it by a month, and with a more interesting presentation imo.

  • Reply kosmique August 23, 2019 at 9:49 pm

    you guys really need to make longer videos ….

  • Reply glitch gamer August 23, 2019 at 10:03 pm

    End is near

  • Reply Rabbit Piet August 23, 2019 at 10:21 pm

  • Reply sweiland75 August 23, 2019 at 10:27 pm

    This is just an video made to promote a product at the end.

  • Reply 16 Bit Images August 24, 2019 at 12:31 am

    No more skunk bear, I guess. This will have to suffice.

  • Reply 2MANYWWWWWWWWWWWWS4U August 24, 2019 at 12:50 am

    1:29 how fast the gay-i learned to train its muscles??? lololololz nice sreudian flip. 😝😝😝

  • Reply Eduardo Gutierrez August 24, 2019 at 2:19 am


  • Reply P Holmes August 24, 2019 at 2:22 am

    Really bad deadlift form Mr AI

  • Reply dehumbertman August 24, 2019 at 3:59 am

    Skynet jokes aside as I’ve already made 3 of them… uhh…. this is going to make the sex doll market…. lit

  • Reply Adam Iverson August 24, 2019 at 4:19 am

    Must be a lot of fun torturing these digital humans.

  • Reply danterj1990 August 24, 2019 at 5:22 am

    This is happening until Skynet Wake up .

  • Reply Kimmy Kat August 24, 2019 at 5:50 am

    Now let's watch humans injuring digital scientists to improve your life

  • Reply johannc avna August 24, 2019 at 6:38 am

    This is cool now you can test forms of surgery on ai humans.

  • Reply Attamah celestine August 24, 2019 at 7:33 am

    Imagine what Boston Dynamics will do with this neural network if they build synthetic muscle that controls the skeleton of the robot

  • Reply MrOiram46 August 24, 2019 at 7:44 am

    What if we are simulated gods in a simulation being experimented on by actual gods to improve their lives?

    Edit: Simulated

  • Reply Angel Cross August 24, 2019 at 8:40 am

    Anyone else feel kinda bad for this guy? The A.I guy?

  • Reply Brandon MArtinez August 24, 2019 at 8:48 am

    how can i get my hands on that shirt

  • Reply Noah Czomski August 24, 2019 at 9:12 am

    -Look, Vegeta! It's an AI controlled body with a reduced number of muscles!
    -..Yes. We AI are a proud race of a new ki…
    -That means it doesn't have a penis!

  • Reply Farhan Rasul August 24, 2019 at 10:50 am

    Biomedical Engineering really did something, eh?

  • Reply Mariano Alippi August 24, 2019 at 2:07 pm

    This is perfect to be done for education with the WebGl. i like Seeker to work with talent narrators but this can be done like a videogame, React.js virtual reality could be another option.

  • Reply Titans Tracks August 24, 2019 at 2:14 pm

    "There training an AI to control an emotionless buff skeleton to lift weights"

    Best thing I've heard all day! 💎

  • Reply AJ LaBue August 24, 2019 at 2:35 pm

    0:23 when ai takes over the world

  • Reply praanav m August 24, 2019 at 3:40 pm

    Blade runner: 2079

  • Reply Kai Ezesi August 24, 2019 at 5:25 pm

    I'm working on a exosuit

  • Reply Jtzkb August 24, 2019 at 5:36 pm

    nobody let Boston Dynamics know about this

  • Reply parampaa2 August 24, 2019 at 5:49 pm

    2:46 The most uncomfortable prosthetic leg I have ever seen so far

  • Reply therealDale August 24, 2019 at 6:17 pm

    How about a little credit for game devs??

  • Reply Richard Littrell August 24, 2019 at 8:23 pm

    As a person with osteoarthritis in my knees, wrists, and ankles, I found your presentation very exciting. Anything that can improve the current therapies and surgical interventions is a breath of hope. This looks like it could speed up the process.

  • Reply A Random Guy August 24, 2019 at 8:51 pm

    Soon that "I'm not a robot" t-shirt will be used by most robots to hide themselves in the human society.

  • Reply Alien003 Hydrogen nitrogen August 24, 2019 at 8:53 pm

    I'm pretty shore humans are late to know
    The NERDS took over . and now their will be pay back . till most of the population is
    Is nerdie like and awesomely smart .

  • Reply William Frederick August 24, 2019 at 9:37 pm

    Let them fight

  • Reply The Mistake August 24, 2019 at 10:12 pm

    You put the reason in the title.

  • Reply l mo August 25, 2019 at 1:05 am

    nordVPN suck in China!!!

  • Reply Ramon Torres August 25, 2019 at 1:25 am

    Beat it up

  • Reply Minh Châu Nguyễn August 25, 2019 at 4:06 am

    Look like they use my joke here.

  • Reply Jilson Tiu August 25, 2019 at 4:07 am

    where did you buy that shirt?

  • Reply cat moonster August 25, 2019 at 9:07 am

    This whole video is meme

  • Reply Romer Villareal August 25, 2019 at 9:39 am

    There's digital human rights!

  • Reply TheTruthPenguin August 25, 2019 at 11:15 am

    how're we gonna learn new shit about our bodies when they're using shortcuts on muscle replication. foh

  • Reply Harshit Singh August 25, 2019 at 1:33 pm

    Surely Rockstar use these type model in GTA 6 for more real life experience

  • Reply Alex Alba August 26, 2019 at 3:28 am

    Now imagine if it's a supercomputer..

  • Reply Emilio Luburic August 26, 2019 at 5:23 am

    Šta ja volim imati,mlad mozak,vježbam matematiku…mnoštvo i mnoštvo puteva.

  • Reply Darrian Sims August 26, 2019 at 5:33 am

    If this doesn't disprove evolution I don't know what does lol

  • Reply Aayush Boliya's Universe August 27, 2019 at 5:36 am

    AI is beautiful!!

  • Reply Zantagiro7 August 27, 2019 at 9:23 am

    you are a robot ginger!

  • Reply R Dizzle August 27, 2019 at 9:37 am

    Too many robots taking over the world jokes

  • Reply Kurt Kennedy August 27, 2019 at 2:28 pm

    Why… Why didn't they teach it to do a flip?????

  • Reply Stephen Bachman August 27, 2019 at 4:11 pm

    can we build future robots to have our weaknesses. do they need to be physically superior

  • Reply Robin Toonen August 28, 2019 at 6:56 am

    Hahaha, that that person bought a bunch of call of duty games. Are you jure it was not you little brother/cousin.

  • Reply Stranac Oppilas August 29, 2019 at 5:00 am


  • Reply mrdabbleswithpotion August 31, 2019 at 5:15 am

    "Oh ouch! Now that his work is being peer reviewed & checked by actual scientist, this guy & his work is hurting so bad right now! Yikes!!!", clearly this science communicator who fancies himself a scientist is also out of the loop. Not knowing what's going any better than any average joe.

    It's all been checked by my supervisor & by peer reiewed other academics that they invited to see it. That's why the intelligence community backs the authenticity & it's just now being more dissipated to even more academics & science communicators like you.

  • Reply mrdabbleswithpotion August 31, 2019 at 5:23 am

    "I'm not a robot"??

    Also "I'm not a scientist", it seems.

    That's OK, you're not an athlete either.
    Wait… Is that suppose to be better?

  • Reply SrmthfgRockLee September 2, 2019 at 10:09 pm

    206-sometimes 208 oir smth i learn in anatomy in university depending on how u interpret them or whether m by ure human i mean a woman or man or maybe smth else–other race..smth

  • Reply SrmthfgRockLee September 2, 2019 at 10:09 pm

    0:35– fortite dance?

  • Reply SrmthfgRockLee September 2, 2019 at 10:13 pm


  • Reply Geronimo Vision September 3, 2019 at 5:29 pm

    Doubt they stole your card info online. Probably from a gas station. Lol

  • Reply Alex September 3, 2019 at 6:26 pm

    I do not like this guy. Seems biased against the project with no real arguments…

  • Reply dan fg September 3, 2019 at 6:36 pm

    "I'll see you next time on Seeker", wasted opportunity for a Terminator "Hasta la vista, baby"

  • Reply 0bvi0us Plant September 3, 2019 at 6:37 pm

    He need your boots,motorcycle and clothes

  • Reply Creamy_a1 Wernerzpanza September 3, 2019 at 7:21 pm

    I want that shirt!

  • Reply Dark World Story's BlankFace Productions September 3, 2019 at 7:43 pm

    So many problems with people's health can't wait to look forward to the future

  • Reply Cole Rees September 3, 2019 at 7:51 pm

    If I programmed this my dad would still tell me to get off my video game

  • Reply Makabongwe Mthiyane September 3, 2019 at 7:59 pm


  • Reply KryptKicker5 September 3, 2019 at 9:10 pm

    Well, the first DLC available for this thing will be the Arnold costume and voice pack. $19,999.99 Hope you bought the season pass.

  • Reply Waylen Edge September 3, 2019 at 10:11 pm

    What ur debit card was hacked? And people wonder why I don’t put cash in the bank! U can’t steal what’s in my pocket!

  • Reply Kaisya Ng September 4, 2019 at 3:36 am

    what if this world is a simulation for "human" to see us "human" grow so it can improve their life O.O

  • Reply The Amazing Spatterman September 4, 2019 at 8:36 am


  • Reply The Amazing Spatterman September 4, 2019 at 8:40 am

    Just imagine this sort of stuff with quantum computers

  • Reply Minh Châu Nguyễn September 4, 2019 at 10:00 am

    Bot: I will sue you, damn scientist

  • Reply Der Headbanger September 9, 2019 at 2:35 pm

    OR: the Robot learns how to stop us from running away!

  • Reply A B September 10, 2019 at 2:36 pm

    At 1:31 he mentions that
    motion capture data from humans was fed into the AI to act as a reference model while learning. Can someone please point me to resources explaining how exactly is this done? I assume the AI here is a reinforcement learning model, so I want to know how do I give a reference model while training? Thanks in advance

  • Reply Eduardo Gutierrez September 11, 2019 at 2:01 am

    Videogame engine ❤️

  • Reply Christian Tablit September 15, 2019 at 2:41 pm

    hit his/her ankle with a scooter

  • Reply dexter111344 December 5, 2019 at 9:44 pm

    You, a dumbass: Why are scientists hurting this artificial creature?
    Me, an intellectual: Because they freaks.

  • Reply Mariano Alippi January 21, 2020 at 9:24 am

    Medical with the WebGl, i like a lot the last video of sleeping Maren made, javascript for little web modification or full developments with the WebGl, and the best soundtracks and Narrations of all sciences

  • Reply Mariano Alippi January 21, 2020 at 9:29 am

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