3 ms·

They're not free because they consume your time, which is valuable.

• danilafe 10mo ago
  Yes, but only if you would spend that time on something that is more valuable (according to your happiness+ heuristic).
  • fastball 10mo ago
    Right, but I think that was the author's point: many of these activities are seen by their participants as "productive", rather than just "this makes me happy". That was a specific point of the post.