Virtual reality was mentioned in another topic and I wish to ask others their opinion on virtual reality.
In your opinion, what constitutes virtual reality? Do you think it is even possible? And if it is, what might be the ramifications, personally and culturally? Other thoughts?


Nobody has an exact definition of virtual reality. It exists anywhere between the current technology (Oculus Rift) and fanciful technology (holodeck via Star Trek).
It's possible right now in relatively primitive forms, but the technology is being aggressively refined. The biggest investors right now are not entertainment, but rather military (both for training and drone warfighting capabilities). Those applications will filter down to general business, industry, communications, and entertainment. Those industries are also dumping money into VR. So, expect some of their advances to filter up to government / military.
The impact within our lifetimes (except perhaps for the very young) will only be minimal to moderate, I think. Beyond that, it will be much more profound.