Just the first video I found on this channel... but it has become my favorite channel.
. . . never mentions spacetime (or Einstein) !
. . . why sidetrack to lazy-eye ?
. . . variation of light ? NO evidence, but referred to as a theory ? WRONG !
. . . why is physics here ? why not ask why is their MOTION ? that IS what physics studies
I think you missed the point of the video. It can be seen as more cerebral than other youtube fare but nobody is accusing it of belonging in a science journal.
That's why I posted it to Philosophy & Meaning rather than to Academic.
@Tanstaafl I consider it reasonable to expect anyone making "learn about physics" instruction to be way more accurate. ymmv