I totally understand the physics and reality of sound/light/etc. traveling different speeds in different mediums, but it's always such a wild thought to me. It tickles my brain in such a delightful way.
Maybe it's low fluff relative to other YouTube videos, for me it could have been a 5 second GIF without any real loss.
Sometimes.
I once had YouTube on in the background and an advert which was an hour long popped up - but I was focused on something else and away from the screen and the tv remote.
The advert? A video of someone pointing a camera outside of a window during the night and onto a dark street (no sounds other than rustling from the person holding the camera). An hour long of it.
Skip.
It was soon after this I paid up.
(this isn’t aimed at explaining it to you, just to write out my thoughts, as I found their explanation a little odd)