There's an inverse correlation between IQ/intellectual ability and social skills. The higher the IQ, the poorer the social skills and the higher the tendency to be called "weird". Those people you meet who are super-smart, purely academic high-achievers, hyper-focused on their own careers etc, are also the ones with a smaller circle of friends because they put less effort into their social interactions than their academics. Conversely, people with a slightly lower IQ learn how to make up for this by becoming good speakers (making people listen to them), developing their personality, making friends and engaging in activities that make them popular with people (e.g. sports). IMO, the most successful people are those who find the sweet spot in the middle, i.e. focusing equally on academics and social skills. They're both as important as each other.