The following contains spoilers from Big Hero 6 (film).

When Baymax saves Hiro and the pod by using his rocket arm at the cost of getting left behind, he somehow got Tadashi's memory card transferred to his rocket arm. enter image description here

How did he do that without going berserk kungfu mode?

  • We didn't see what happened post arm-expulsion, so Baymax might have gone berserk. Plus his battery was running very low, the hand-propulsion might have been his last action. – Möoz Feb 2 '15 at 3:02
  • @Mooz, we did see Baymax post-arm expulsion. Check edit. – Mark Gabriel Feb 2 '15 at 14:27

The short answer is that Baymax doesn't need the discs to function, they appear to simply be backups with various information on them that's not part of his core programming, in this case 'health care data' on the green disc and 'karate data' on the red disc.

When Hiro removes Baymax' health care disc (before attacking the professor), Baymax says

"Hiro, this is not what...."

before his disc is reinserted. This shows that he can quite happily speak and move without either of the discs in place.

enter image description here

It stands to reason that Baymax simply copied his personality and experiences over to the green disc when Hiro wasn't looking and also presumably discarded the red disc at the same time.


In universe answer: Because seeing his vulnerability, Baymax had used the very reasonable countermeasure of copying the contents of each memory chip to each other, thus achieving redundancy.

Out of universe answer: Because, sigh, Disney needed a last minute drama sequence to jerk your tears. To be honest I was wondering in that entire scene why Baymax didn't just tell Hiro to take his memory chips, and thus spare the kid a lot of unnecessary trauma. But hey, I guess pretending to die is a well known healthcare technique in Japamerica.

  • Do you have canon quotes or lines to explain the in-universe answer? – Mark Gabriel Feb 2 '15 at 14:17
  • No. It isn't actually explained. However, given that Baymax said "I'll add that to my library of medical procedures" to the fist bump thing, his memory chip was writable and Baymax had access permissions - and I'd assume Hiro's new chip is no different. Thus, it would be trivial for him to copy files from one to the other and that's what I would do in his position. – Fhnuzoag Feb 2 '15 at 14:22
  • Speculation isn't exactly an answer. :D – Mark Gabriel Feb 2 '15 at 14:23
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    Also if Tadashi was really a genius, there ought to be a github repo out there with full version controlled backups of every Baymax iteration! Keep backups, grad students! – Fhnuzoag Feb 2 '15 at 14:26
  • And Baymax should sync himself periodically to the Cloud via a built into 4G connection! Just what is the Professor teaching these kids? – Fhnuzoag Feb 2 '15 at 14:42

The robot "NEEDS" a command from Hiro to go all Kung-fu crazy.

He isn't inherently homicidal.

Hiro TOLD kim to kill. That is a violation of every law of robotics.

  1. A robot may not injure a human being or, through inaction, allow a human being to come to harm.

  2. A robot must obey the orders given it by human beings, except where such orders would conflict with the First Law.

  3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.

I'm speculating here as it wasn't shown on screen but the robot simply followed the 3rd law to the letter and therefore nothing bad happened.

reference LAWS

  • 3
    Not all robots in fiction follow the three laws. There's no evidence whatsoever that the screenwriter had the three laws in mind when they created this story. – Valorum Mar 15 '15 at 17:40
  • I think this is on the right track but w/o invoking THE three laws of robotics. – DQdlM May 4 '15 at 12:28
  • Watch the cartoon again. it is NOT stated anywhere but the robotic Laws are beeing followed. When hiro cant acess the robots port, when Hiro has to explicitly say "kill" to the robot and point out a target etc. – Cherubel May 4 '15 at 12:42

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