Well if you mean MCAS, then coding was not a main issue, but the fact that system expected 2 sensors to deduce malfunction while management decided to put there

Well if you mean MCAS, then coding was not a main issue, but the fact that system expected 2 sensors to deduce malfunction while management decided to put there only 1 sensor and 2 only as a premium. Then MCAS system had no way how to deduce if 1 input sensor is sending correct data or garbage.