I've never encountered a well written business layer. Any advice?

Question

I look around and see some great snippets of code for defining rules, validation, business objects (entities) and the like, but I have to admit to having never seen a great and

Answer 1

Possibly because in reality we are never able to fully decouple the business logic from the "process", the inputs, outputs, interface and that ultimately people find it hard to deal with the abstract let alone relating it back to reality.