You don't. Learn instead. Maybe you are wrong technically. Probably you are wrong socially. Because if someone wants your opinions, they will ask. And beca

You don't. Learn instead. Maybe you are wrong technically. Probably you are wrong socially. Because if someone wants your opinions, they will ask. And because your boss is your boss. And because usually everyone working together in a common direction is more likely to succeed than debating past decisions and throwing away work. But mostly because you being paid because what needs to be done is work. Good luck.