answer:An effective President has to be somewhat of a polymath. They need to be up to speed on a wide variety of subjects, to the point that they can speak extemporaneously on them with confidence on the latest up to the minute info. And,they need to speak about it in a cogent manner in detail, not in an off the cuff way. Then they need to carry out a consistent policy on matters. And through it all, a decent President bears in mind that people’s lives and livelihoods are affected by just about every decision.