When concepts clicked (HN thread)
A great thread on HN about concepts that took a while to understand - with a focus on a lot of software engineering and soft skills
I’m reading Petzold’s Code , and it dawned on me that I didn’t understand logic gates intuitively until now. I took a Computer Architecture course back in college, and I understood what logic gates meant in boolean algebra but not empirically. Petzold clarified this for me by going from the empirical to the theoretical using a lightbulb, a battery, wires, and relays (which he introduces when he talks about the telegraph as a way to amplify a signal).
Another concept is the relationship between current, voltage, and resistance. For example, I always failed to understand why longer wires mean more resistance while thicker wires mean less resistance.