I mean both UIs (not specifically rails) and machine learning, and emulators, and CRUD, and even software like compilers which was already well-researched by th

I mean both UIs (not specifically rails) and machine learning, and emulators, and CRUD, and even software like compilers which was already well-researched by then. These days a compiler can be whipped up by an expert in a day or two (for small languages).