> If you talk to a random person they are pretty dumb, and you find random people at busses.

No, that's not how randomness works. If you talk to sufficiently many random people, you will likely get a wide distribution of people.

Besides, talking to strangers is not a good measure, because people are often guarded around strangers. Especially on the bus, I thought people who tried to talk to me out of the blue were a bit strange and to be avoided.