(1/2) Heard something on the radio that I thought was interesting, but I haven’t verified. It had to do with communications and both the social aspects and comprehension aspects of either pausing, or using “uh” or “um” to fill space when speaking.
On the social side, “uh” or “um” seemed to communicate a person had more to say and so the other person should not interrupt. “Uh” communicated a shorter idea was following with “um” communicating a longer idea following…