How good was the Morpheus demo at GDC 2015?

@iandizion713 fooling a person into reacting as though something were real, is not even remotely difficult. Have you never jumped when the scary thing jumped out in the movie? Never been to the omnimax theater, where the directional sound, the dome, both combined to make you feel like you were skiiing, and when you looked at people, they were swinging left to right trying to control it even though they couldn't, and it wasn't them? or watching people start leaving the theater due to sea sickness from the titanic film? several rides in theme parks, at universal, disney, use forms of this fooling, to effectively make people think something is there that isn't. Heck, seen examples of this at disney land in the 70's....