I have worked with a lot of people that were technically competent in a narrow field, but surprisingly clueless in most aspects of life.

It was sometimes a bit frustrating, since they could occasionally spend a lot of time on problems that had a simple solution for someone with some common sense.

I don't feel smart myself but generally get the big picture so I find it fascinating that smartness is multidimensional like that.

Hans Reiser[1] didn't do too well with the murder thing either, despite being (apparently) pretty damn smart w/r/t file-system internals.

[1]: https://en.wikipedia.org/wiki/Hans_Reiser