More research into this area is always welcome. Still would like to see more research into replicating full biospheres.

I've given them an honest shot, but like many I could not finish a course. I found that the lack of a face to face human communication was a huge stumbling block to success. Especially thring to learn python, math subjects, etc. It is far easier to be spoon fed knowledge and walked around complex subjects with your hand held. The main weakness in MOOCs is the lack of human interaction and instruction when you are not able to figure it out on your own.

“There's no proactive obligation to investigate what happens on your service," said Tamir Israel, a staff lawyer at the Canadian Internet Policy & Public Interest Clinic (CIPPIC). “If you do become aware that something is there, there's a reporting obligation. But usually data centers aren't actively looking through their stuff, so it's reasonable to say that they wouldn't have come across that." Nobody's got time for that!