[wizzler]

Is that an opinion or a subjective attitude? Why does this expression have to be anything at all, especially the most common mistake? Assertion of an opinion as fact might be common, but hearing an opinion as a fact is equally common.

Sorry, you'll have to be more clear if you wish for others to understand. As it stands, this is indecipherable.

[RightWhale]

you'll have to be more clear if you wish for others to understand

I ain't Simone 'clearness-in-and-for-itself' de Beauvoir.

[kevao]

What he said was that the assertion of a commonly held opinion as a subjective fact, rather than hearing it as an equally common expression, is not merely speculative. To the contrary.