I remember not so long ago reading an article (perhaps in response to The Martian) lamenting that one of the things sci-fi always gets wrong are form-fitting space suits. Those are not possible, it said, because of pressurization blah blah blah. Now, just a few years later this is already in development:
Whoever the author was, they've now joined a long line of people who said some concept or another was impossible only to be proven completely fully of shit. Basically, naysayers can suck it.