At any rate, the goal under discussion was informing the other person of the error in a way that didn't result in defensiveness or aggression.

I am comfortable with the relevance of my statements to the goal under discussion as described by yourself, above. I can attest to the superiority of Perplexed's approach to precisely said goal. When done well it will produce less defensiveness and aggression.

What you do personally in your life isn't a subject that I have or would comment on - I speak only to the specific context here wherein Perplexed presented a near-optimal solution.