There's often a skill that seem interesting, but I can't see doing anything for me in my day-to-day life. What have you learned that was a lot more effort than the payoff was worth?

you are viewing a single comment's thread
view the rest of the comments

When I taught flight school, we flew planes that ran on automotive gasoline. (see also: Rotax 912). Even then paying for fuel ate us alive.

  • source
  • parent