Okay, let's break this down.
Originally Posted by mafoofan
I never said I believed it was embarrassing to make a mistake. The statement was about what others ought to perceive at the worst, not what I myself believe.
I did not state that you said that. You stated (the quote is bellow) that assuming a mistake is an embarrassment and, to that, I replied that this view would only perpetuate your character flaw (arrogance), which is evidenced by your participation on this forum. Point, no more, no less.
If anything, it's embarrassing to admit I am wrong and it would be far easier just to not report that I made a mistake.
Try to parse this: the shirting did not change, but my understanding of the shirting did. That's why my judgment changed.
If your understanding about it changed, you changed. Common, I sure that you can keep up to this.
My point is that you had the stuff on your hands and you still saw potential on it, but, after acknowledging that it has polyester on it, now you see it as crap. It still feels the same, it still has the same properties.
So, your first judgment was based on what? In my opinion, mainstream opinion.