> don't force them to admit to themselves that they were wrong: if you let people 'save face' they can just get on board and agree with you. If you force them to grapple with being wrong they will be difficult and will hate your guts

I think that an inability to admit a mistake is arrogant and results in a lack of accountability and ownership over individual's work. If someone makes a mistake they should be proactively owning it and trying to find solutions to avoid similar mistakes in the future.