The entire point of the Quora answer (by a sushi chef of 14 years) is that there is a limitless depth of knowledge for what at first glance might appear to be a

The entire point of the Quora answer (by a sushi chef of 14 years) is that there is a limitless depth of knowledge for what at first glance might appear to be a "narrow range of topics". I mean sushi is just cutting fish right? Just like programming is just typing instructions into a computer, or painting is just smearing pigments on a surface. Nothing to it. :)