The practice effect
There are two kinds of skills, resources and tools:
Ones that get used up as you use them.
And ones that get better when you do.
Nobody wants there to be a crowd at the ski area on a bluebird powder day–too many people use up the new snow.
On the other hand, it’s no fun at all to go dancing when you’re the only one in the club.
A painting or a song that’s experienced by more people is worth more. A carpenter increases her skills when she works on new projects (to a point). On the other hand, a sharp knife gets dull if you use it too often…
If you’ve got something that benefits from use, from practice and community, use it and share it.