[Dirk, who grew up with so very little physical interaction, can take her point. Part of why he isn't very expressive is that no one was there to see him make expressions, so he never learned to do it as a matter of communication. It's the same reason he isn't a good liar if you have sharp enough eyes to notice. But the way she has put it makes him reconsider his understanding of the network, and also wonder about Genette.]

I can follow that line of logic. That implies, though, that no stray thoughts get free when you communicate, and also that you'd rather be caught out in a lie than not.