Predestination doesn’t waste time trying to explain the time travel technology, and it doesn’t need to, because it’s so coherent and straightforward, you naturally see that it makes sense right away.

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

AI's energy appetite continues to outpace clean generation. Renewable sources are promising but not yet sufficient. Nuclear remains reliable but slow to deploy. In the meantime, AI runs on a mix of ...