Business logic is certainly a reflection of a programmer's understanding of the business, as well as their skill in applying object oriented concepts (or whatever) and occam's razor to express it in a manner that doesn't balloon in complexity and isn't cognitively wasteful. There's an art component, and a science component; and if they're both right it will make a solid foundation for everything else, and for communication with the business.
Business logic is certainly a reflection of a programmer's understanding of the business, as well as their skill in applying object oriented concepts (or whatever) and occam's razor to express it in a manner that doesn't balloon in complexity and isn't cognitively wasteful. There's an art component, and a science component; and if they're both right it will make a solid foundation for everything else, and for communication with the business.