I still fail to see how papers on older tech (and it was more than just the size of the eyepieces, eg Virtual Boy) can be said to apply to the same tech today.

I still fail to see how papers on older tech (and it was more than just the size of the eyepieces, eg Virtual Boy) can be said to apply to the same tech today. Cars in the 90s were less safe than cars today. You may build upon car safety studies in past decades but you need to test and re-confirm the conclusions of the older test subject hold true for the modern test subject. Some things _may_ still hold true but where in science do you draw the same conclusion for a blanket category of "All VR"?