Please compare this demo
( You can open it on your phone using https://output.jsbin.com/wasaki/ )
(You can open it on your phone using https://output.jsbin.com/gozetat/ )
Hint: "look" at the green cube. It means putting the cursor over it. This is a typical action in VR called gaze. It's a very important one to understand as it is the lowest common denominator in ALL VR experiences.
A special entity yet a normal entity. Why special? Why normal? What was the difference between the 2 demos?
What do you believe are the problem of advantages with playing with the camera?
What are the do or do not rules of camera in VR?