That reads like a bunch of equivalents to TCP ACK. Marvelous! In political debate on TV here in NL, I noticed nodding is often used to indicate a listener is l

That reads like a bunch of equivalents to TCP ACK. Marvelous! In political debate on TV here in NL, I noticed nodding is often used to indicate a listener is listening. It doesn't mean they agree. Its essentially a way to shut/calm down the active talker, akin to 'yeah yeah, get on with it, let me reply...'