[cmurf]

It was both an unsafe airplane and pilots were not made aware of how everything worked.

A human pilot properly informed in advance could paper over an act of sabotage by a flight control system, but that does not make the airplane safe.

A single sensor reporting bogus data was used by a system to automatically take dangerous action. Both are dangerous. But in particular the latter, because it permits an excessive reaction to what is supposed to be merely stall avoidance, not recovery. Even stall recovery does not require anywhere near the kind of nose down amount MCAS was permitted to induce. That behavior is sabotage. If a human pilot did the same thing, with the same available bogus information, it would be incompetency. And if it lead to death, it would be manslaughter.