# Comment on Tyrone's Latest Post

##### By Arnold Kling

I got a server error when I tried to leave a comment on Tyler Cowen’s blog. Here is the comment:

Suppose that the credibility of a scientist is a function of two variables: (1) the evidence he offers; and (2) the strength of his beliefs. I am willing to allow the partial derivative of (2) to be positive and to stipulate Tyler’s argument that faking data is a signal of strength of beliefs. But the partial derivative of (1) is much stronger, and fake data enters with a negative sign.