[gjadi]

It has different names. In Pragmatic Engineer (the book) it's called tracer bullet, others talk about walking skeleton and I remember a post not too long ago that gave it a different name but I can't find it.

And I agree, it's a very good advice and not always so easy to follow. You often need to cut corners and ignore stuff for later to connect the system ASAP. It's mostly through experience that you learn what can be ignored and what should not be ignored.