A quick note on something I thought of some time ago.
Many Youtube clips are not shown in their entirety, as one clip, but as series of clips of (around) 10 minute.
It has been interesting to me to note the number of 'views' for each of these 10 minute clips. One might think that the counts should be the same for each, but they are not.
Are these counts a measure of the value of the knowledge in the clip.
If the numbers remain near constant, one might say the knowledge is elastic - more knowledge is to be gained by watching the next.
If the numbers diminish, one might say the knowledge is inelastic - more knowledge is not gained by an watching another.