[mkramlich]

That suggests what might be a good rule of thumb for distinguishing a rock star programmer from the other kind. The rock star says they can do it, and mean it. Then they do it. Done.

[j_baker]

...or the rockstar says they can't do it, and mean it. Then they don't do it. Not done.

[tbsdy]

Or the rockstar programmer says it can't be done, then he does it. And the big company looks at it and ignores it.