I miss the old ruthlessness of the circuits class in electronic engineering: two hours, open book, paper. Six questions. Average grade: 45. Curved. Lesson: You

I miss the old ruthlessness of the circuits class in electronic engineering: two hours, open book, paper. Six questions. Average grade: 45. Curved. Lesson: You don't know as much as you think, be humble. Also, how to design a safe and simple train switching system with karnaugh maps.