The more he says, the worse Dick Costolo looks. He should just shut up.

I keep reading Dick Costolo as Dick Costello, but imagining Dick Vitale

Bickety bam, baby!

Seriously, is Dick Costolo being taken out of context or is he really as bad as his words?

maybe these guys just don't know how to respond to the question.  they seem absolutely flabbergasted when "accused."

they have no answers because they don't understand the problem;

because they don't SEE the problem;

because they don't believe there is one.

or that they simply don't know how to solve something they don't feel the need to solve.

or that they don't know where to look, and they just hate not having an explanation, when their whole professional role is about having answers.

I think it's that they don't see the problem. 

Three years later I still think you're right.