One of the skills of leading is listening and following the right advice and following requires self direction and wisdom, making a choice between them makes you neither.
Especially when someone is wrong there is much to learn from that. Leading a country is a domain that does not allow much room for mistakes, therefore they do not lead alone and mediate between the top minds in the many different fields that have to be managed.
You need wisdom to follow because you need to distinguish where to follow and where not. Not everything applies in the same way to everybody with different situations which again requires knowledge from experience, application. An active mind.
Art-Tech 