> Your friend is just slow. The issue here is that, in the US at least, referring to someone as "slow" is making a statement about their IQ. There are many po

> Your friend is just slow. The issue here is that, in the US at least, referring to someone as "slow" is making a statement about their IQ. There are many possible causes for the coworker's "slow"-ness here, e.g. anxiety, doubt, and high standards. Perhaps the coworker feels the need to respond only with well-researched responses and refuses to engage in speculation.