None of those links are about Chemistry or Physics. The demos link is Economics, The Entrepreneurial State. The youtube link is about the history of the internet. Maybe try learning something that isn’t STEM. Might broaden your way of thinking.
I’ll respond to the rest of your comment later, although I’m not sure I want to anymore since you clearly have no interest in taking into account new information.
Also how the fuck can you be interested in technology and say something like this:
Because most of it was useless. What kind of innovation did. space exploration bring to humans?
If you know anything about any science you should know how stupid of a point this is