I do spend time on YouTube and learn something every day.
They have started loading me up with commercials, guess I may have to spring for YouTube Red. It is too useful to me to put up with the annoyance, dang it. Those big time fails, when you have a really bad day or some such, are sometimes really funny.
I had no idea how they lay railroads now until I noticed concrete ties at local railroad, all laid by machine now. Amazing factory machines, Big farming all computerized tractors.
I am 80 years old so I been around since horse drawn plows. 😀