"I'm not sure I follow" in this context is a kind of low brow rhetorical technique, used to try and make the recipient feel stupid or inferior and drop their ar

"I'm not sure I follow" in this context is a kind of low brow rhetorical technique, used to try and make the recipient feel stupid or inferior and drop their argument as a result. I've also seen it used for objection handling by mattress or car salesmen.