[klodolph]

You can like to set any expectation you want, but the expectation to tip waiters is an actual, real expectation and not some kind of fabrication for a thought experiment.

You could also argue that “driving on the right side of the road” is nothing more than an American social convention and choose to ignore it. Let’s face it—there is no logical justification for our society to choose driving on the right side of the road, versus the left.

[lotsofpulp]

Driving on the right side of the road in the US is the law, not a social convention.