You see, this is a good example of what a delusion is. In the
delusional person's mind, others have made a mistake, but in
reality they, the delusional, cannot even say what the mistake is.
They feel, they imagine and they suppose.
So learn from this. Do not trust your feelings, your suppositions
and your imaginations and be clear in your own head if you think
someone has made a mistake, be sure you are clear in your own head
what the "mistake" is, otherwise, you will have a delusion like in
this case.
This again is what unscientific people do. They do not go with the
evidence and proof. They go with their feelings, their suppositions
and their imaginations.
If you are a scientific person you will avoid having delusions like
this because without proof and evidence, you will reject your own
feelings, your suppositions and your imaginations and in so doing,
remove delusions from your head.
learn from other's mistake. It is less costly and you won't look
like a fool.