A strong leader will surround themselves with people who know more than they, who will fill their intellectual or skill gaps. A leader does not need to have everything figured out–rather, they simply need to lead.
At times, our collaborating partners will know more than we. At such times, it is important to let our egos subside and step out of the way so that the individual who is more skilled in such a needed skill area, might lead, if only temporarily.
In leading, one needs to know when to step out of the way and enable one who is more qualified in certain areas (as the project so demands or requires) to assume a leadership role. Weak leadership might feel threatened by such a prospect–that their authority is somehow threatened. Such thinking is small mind. Strong leaders can think with a larger mind.