Cool topic, but completely unacceptable to rant 20 minutes on tangentially related topics before getting to the actual issue at hand. I understand that Youtube prefers longer videos for monetization, but this is absurd.
The video has a clickable chapter list and a time scrubber, and the other chapters are closely related.
It’s very frustrating to see deceiving titles and the actual content related to the title is 2% of the entire video..
If you were hoping for the technicalities of it, then I can see how it's not what you want. I know what I think is enough about the history of telescopes, so I skipped that part, but I thought the history behind how he came up with the idea fits squarely into the title.
On the other hand almost everyone clicking a video called "Guide to replacing a toilet float valve" is actually looking to replace a toilet float valve.