There  there 's actually to tell you the truth , the reason why it 's hard to measure is because of so , from the point of view of studying dialogue , I mean , which  Dan Jurafsky and Andreas and I had some projects on , you want to know the sequence of turns.
Yeah.
So what happens is if you 're talking and I have a backchannel in the middle of your turn , and then you keep going what it looks like in a dialogue model is your turn and then my backchannel ,
Yeah.