Why is it that "it's more art than science" gets so much use, whereas "it's more science than art" is never used? We use the former to explain why a given proce

Why is it that "it's more art than science" gets so much use, whereas "it's more science than art" is never used? We use the former to explain why a given process is not deterministic -- for example, appraising artwork, drafting a business plan. Why is it never necessary to explain that a process is deterministic?