Bionic legs put wheelchairs on notice

OK, so the wheelchair won’t be obsolete until the REX system and its inevitable competitors are a great deal cheaper than US$150k, but I feel safe in assuming that won’t take too long in the grand scheme of things. Even so, as a proof of concept for technology that will allow people with paralysis of the legs to walk – actually walk, not just get around some other way – this is some sweet hardware; as a commenter at MetaFilter put it: “Jokes aside, even though the functionality is fairly constrained, the smile on his face says it’s worth it.” I’m inclined to agree.