It's only one way to approach things. Many good people are not great explainers. However, I do find a willingness to try and get down to first principles a good

It's only one way to approach things. Many good people are not great explainers. However, I do find a willingness to try and get down to first principles a good sign. I only take it badly when people seem unable to think outside their expertise, or seem unaware of the layers above and beneath the particular strata they work within.