This has always felt like such a weird quirk in human behavior. Imagine a 5 year old who is good at basketball. His parents notice it and enroll him in a class. Coaches recognize his talent and dedicate special time to him. He trains every morning, every night and entire weekends through primary, middle and high school. Gets barely any time for classes, but he anyways just needs a passing grade (which teachers are ha…
https://en.wikipedia.org/wiki/Halo_effect
More generally, if someone is good at something (here, basketball), or even just because he is tall, attractive,... we instinctively assume that he is good at everything (like here, geopolitics).