Steve Jobs spent his entire life working on, and talking about, personal computing technology. How many world class experts lack confidence in their area of exp

Steve Jobs spent his entire life working on, and talking about, personal computing technology. How many world class experts lack confidence in their area of expertise? It almost doesn't make sense to ask. Very few people will ever put in the kind of effort and time that Steve Jobs put into his work, and so they shouldn't ever expect anything like his level of expertise or confidence.