For those prone to confirmation bias, commentary and interpretation of data can be counterproductive. The fact that Ballmer is purposefully not setting an agenda makes this more powerful. Otherwise people tend to accumulate their own set of convenient facts.
>> Otherwise people tend to accumulate their own set of convenient facts.
>I think people will do this anyway...are we not human?
Be careful with this sentiment. It is defeatist cynicism masquerading as self-deprecation. As such it undermines the truly well-meaning among us, conflating their intellectual humility with another's willful ignorance.
Of course they will - just look at another set of comments on this page. Two people coming to diametrically opposed conclusions based on the same data w/r/t top marginal tax rates and US government revenue.