I think in practice it's a user / tinkerer / developer trichotomy. Or to put it another way blind user / configuring user / developer. With the ability to take

I think in practice it's a user / tinkerer / developer trichotomy. Or to put it another way blind user / configuring user / developer. With the ability to take a change someone else has made and apply it to something you purchased (e.g. Cyanogenmod) being exercised far more frequently than individual development.