[bluGill]

Laundromats exist, but there are 100 million according to my web search which puts his estimate in the right area even if he is off by 30 million.

Most Americans would not call a washing machine a luxury good. Even in much poorer Mexico there are a lot of families living on $100/week that have a washing machine - they are an affordably luxury to many poor people.

[smileysteve]

If the statistical "right area" is within 30%, then 60m is similarly in the correct area.

But the context is most important, are AI's worst strategies worse than 30% off because of gross generalizations?

[bluGill]

Depends on the context. Sometimes I need to be correct to withing 0.0000001%. Sometimes I can be off by 500% and still be close enough.