I tend to phrase this as intelligence by attitude. You get people who are bright, but have virtually no curiousity and who stay within their specialism of know

I tend to phrase this as intelligence by attitude. You get people who are bright, but have virtually no curiousity and who stay within their specialism of knowledge, often due to setting a high value on others views, so not wanting to look stupid. Conversely you also get creative and determined slow people. And they will thrash the merely bright in almost any problem that contains significant depths.