I've been holding onto this article for over a week. The writer is a bit wordy at points, but shows his meaning fairly well. Basically companies are using Mixed Reality to describe whatever they can. Projection screen? VR? Interactivity? All Mixed Reality now.
It's going to be misused a lot, and I expect to read lots of bad articles with that in mind.
https://arcadeheroes.com/2016/07/20/knowing-rs-sr-vr-ar-mxr/
Here's a good idea of how they're supposed to work. You can debate the differences, but you do see the differences.
Life is in the Matrix. The garden of Eden was the tutorial mode.