No, when I was working as an engineer. Charity work is of course different regardless of your profession. Nobody is making money off your labor.

The model "never work for free" doesn't capture that nuance, which is the whole point of flowcharts like the linked one :-p

You're right. You should also work for your mother for free. I also fix my wife's computer for free, bu

You're right. I also fix my wife's computer for free, but not anyone else's.

And that's why I don't throw around "never work for free" as actionable insight :-p