> Fist, a misconception, there is no such thing as "free" time (opportunity cost: whatever you do means you're not doing something else in that same time that m

> Fist, a misconception, there is no such thing as "free" time (opportunity cost: whatever you do means you're not doing something else in that same time that might benefit you more). "Free" doesn't only refer to monetarily free. What OP did was in their free time, as in, free to do whatever they want with. i.e. Not work time. “free” as in “free speech,” not as in “free beer”, and all that.