A nice man on quora defines VR/MR/AR as follows:
"Virtual reality replaces your world with a virtual one.
Augmented reality supplements your world with digital objects of any sort.
Mixed reality seamlessly integrates digital objects into your world making it look as if they are really there."
...soooo...if none of these headset have cameras, then surely they are VR not MR?
Or is the nice man on Quora mistaken?
Or is it that VR now seems old fashioned so MS wants a new word?
Enlightenment much appreciated...