Developing Domain Expertise

I think it's really interesting how people develop a deep expertise or think deeply about us pacific aspect of the Internet or of a product or of a company or a problem, and then that leads them to have a series of ideas all sparked from that unique insight Or that unique perspective that they develop the old canonical start up advice from 20 years ago was like what is your unique insight that makes you that gives you a unique perspective for solving this problem or founding this company etc., but I think the new version of That, especially for product designers and in the founders, is like what have you dive deeply into in this, like