Answer to: “If Brains are Computers, Who Designs the Software?” 

 ...no, human brains are not computers.  It works within Earth Environment.  This brain, if taken off Earth Environment, cannot function, therefore, it has to create an artificial environment to function for short time or create Earth Environment on other plannets (a plannet is a planet where humans can exist for long time: born, reproduce and die).  Computers are devices capable to do work.  Work done much faster than a human brain does, even update itself but just with algorithm mathematic; humans brain works with the use of logic, reasoning, emotions and feeling made by specifically living cells that is part of the human body, while computers do not make its work based on those as humans does its work, not containing logic, reasoning, emotions and feeling as part of its algorithmic mathematic.

https://youtu.be/TTFoJQSd48c