I'm not going to try to turn something qualitative into something quantitative
But consider how likely it is you'll be misinterpreted typing on the internet, then how comparatively less likely you'll be misinterpreted talking on the phone, then how vastly less likely it is that you'll be misinterpreted talking face to face.
(Eukanuba, Tue 3 Jun 2014, 22:08, 2 replies)

nobody is suggesting that there is no non-verbal component to communication
but the 10% words claim is utter fucking twaddle. even the hippy psychologist who did the original experiments admits they've been misused by witless hippies and charlatans. the idea that those charlatans are working with vulnerable people is horrifying
( Dr. Shambolic je suis charlie, Tue 3 Jun 2014, 22:35, closed)

My point is that the vast majority of people who have a belief in body language and non-verbal
communication do not know how to interpret it, have no real knowledge of it and therefore reach incredibly bad decisions based on stupidity. The OP's short term boss being a case in point. Also, all 'negative' body language can be trained out of a person. Micro expressions never lie but that is a real subject.
( d.r._and_quinch when will you be famous?, Wed 4 Jun 2014, 8:35, closed)