[sharemywin]

That their is a lot of traits that can't really be measured. There are other traits that a good for some purpose but are a hindrance to another. Many that aren't innate. A lot of tasks that only require proficiency. And then how do you value each trait against another.

Then, there's the whole topic of values. And what values are important to your organization.

[imustbeevil]

But that doesn't address the point. If we take two people, and one person is better at everything we can measure, the conclusion cannot logically be that the person who is worse at everything "must be good at something we aren't measuring". There's absolutely no data to support that conclusion, because the conclusion is literally based upon the idea that there is missing data. That's bad logic.