At any given point in time, it is day on half the planet. So, solar power can work by night, because it is always day somewhere else. I realize that moving extreme amounts of electricity over 1000s of km is difficult in itself, not to mention the huge headaches from the Pacific and Atlantic oceans.
It is certainly both a hard and expensive problem to solve, but I don't have the engineering insight to compare it to construction of enough nuclear power plants along with resource extraction to power the global economy. Not to mention locations for plants, handling of waste etc. Do you?
but they don't really go into much detail regarding what the video watchers saw
I agree. It is really important what actually happens. I attended a university course where the lectures were streamed live over zoom. It had a video stream of the presentation and another video stream showing the lecturer. The second stream was controlled by an assistant, so one could also see what the lecturer was writing on the blackboard, and the assistant also kept track of the chat, so questions would be asked to the lecturer quite fast after being asked in the chat.
I tried both the live and online lectures, and both were quite good. I prefer the live lecture because it is easier to interact with the other students.
Truly simple systems... require infinite testing. -- Norman Augustine