Kham wrote:Then I said to myself, what the heck was that? Then I explored it and found that there were three distinct backgrounds.
Technically there appears to be two distinct "background environments" which, as you say, have been made superficially similar... however I'll bear partial responsibility for the use of the "three" as I did mention a "third view".
I won't respond to your psychology "lesson" or whether or not an interview means or implies a single sitting as they seem to invite likely fruitless discussion.
I just hope from now on you'll be more careful with your analyses (and you presumably took some time to make your first jpeg image... and then the second).
As it happens I agree the video is "off" in some manner & I have no idea how the maltreated Hawkings dumb-y is communicating with the interviewer (heck I get the vague impression that Hawkings responses are dubbed onto a separate soundtrack... although it's obviously difficult to confirm).