Ever wondered about the infamous “Waitress Missing $2” riddle? Watch as we break it down step by step and reveal the logic behind this classic brain teaser. Perfect for puzzle lovers and curious minds ...

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 ...

When reading a passage, readers may pause at a particular word or return to reread it. Studies using eye-tracking, which ...