I don't believe people are wired for specialisation. Good schools build people. But then we tend to specialise. I have always been more of a head person than a body person, but in my school days that didn't stop me. Each year, I would try out for stuff 'just in case' a new super power had blossomed. 'Yes last year, I was in the 7th team, but I am bigger this year'. Once we hit work, the danger is we pick one thing. We become that guy in the gym who only exercises his biceps. We stop being competent at life, because we are excellent at one tiny aspect. The irony of self-defining as a 'head person' is you can disconnect from the world you are thinking about.