All software has two domains of tacit knowledge. One is the domain where the software is applied, one is the knowledge of how to build software that maps to req

All software has two domains of tacit knowledge. One is the domain where the software is applied, one is the knowledge of how to build software that maps to requirements. You'll always pay for acquiring the applied domain knowledge, you can save on paying for the software engineering knowledge acquisition. If you're smart, you have both a senior and a junior engineer so you can transfer the software domain knowledge, because acquiring tacit knowledge by working under a knowledgable expert is... not free, but close to it.