"You caught me trying to cheat a little… I also had in mind the same experience you describe of going between different phases. My attention can be extremely diffuse, but if there's a problem I want to solve (that's challenging but just within reach of my abilities) then I have no problem grinding away at it. I'm pretty sure Dewey covered that, but it's been a while (I'm getting myself back into pragmatism so it could become a more common topic here)." - Brian Frank