Concise to the point of vacuous. It says practically nothing. It describes only the barest outlines of government, and effectively all of the actual implementation has been a matter of legislation, judicial decisions, and tradition. Individual words are scrutinized as if they will somehow be unambiguous if we stare at them long enough, or bring in enough cherry-picked outside context.
The section on the courts is especially hilariously short. It basically says "We should have one". Everything after that -- included the vaunted ability of the Supreme Court to "interpret the constitution", is a matter of them deciding that it was something they were going to do and everybody else going along with it.