Bryce Walton & Eli Jayne 
The Floater [EPUB ebook] 

They called it “the basketball” because of it’s shape. It was a sort of mechanical embryo and men entered to test their limits.

Normal human beings can take a couple of hours of it usually. They like it. Every human being to some extent likes to return to the womb. But after a couple of hours most human beings start going to pieces, short-circuiting. Except Barton…