It could be dangerous if you're walking around like a zombie that can't see, out in the middle of a highway... sure.
But seriously, I don't see how people can even get up and walk around on that. It practically sucks you into your chair. You have to be a real stubborn SOB to get up and try to walk out of the house.
I have seen people do that in videos, but there are usually a bunch of people sitting there laughing and staring at the person tripping... not cool.. Who wouldn't want to get out of there?
I had absolutely no problems doing it alone. Never once got up (couldn't if I tried) and walked around while I was "somewhere else". It wouldn't have lasted long enough for me to get into a dangerous situation even if I had.
__________________
|