"It just wouldn't be useful for anything." It is useful for something. It's just not useful for problems that require a high degree of specificity. And not all

"It just wouldn't be useful for anything." It is useful for something. It's just not useful for problems that require a high degree of specificity. And not all problems do; in fact, some are hindered by it. (For instance, focussing on individual atoms won't really help you do politics.)