So I started my first job as a computer programmer
in my very first year of college,
basically as a teenager.
Soon after I started working,
writing software in a company,
a manager who worked at the company came down to where I was,
and he whispered to me,
"Can he tell if I'm lying?"
There was nobody else in the room.
"Can who tell if you're lying, and why are we whispering?"
The manager pointed at the computer in the room.
"Can he tell if I'm lying?"
Well, that manager was having an affair with the receptionist,
and I was still a teenager,
so I whisper-shouted back to him,
"Yes, the computer can tell if you're lying."
(Laughter)
Well, I laughed, but actually the laugh's on me.
Nowadays, there are computational systems that can suss out emotional states,
and even lying,
from processing human faces.
Advertisers and even governments are very interested.