[cleansy]

However, in this article it’s referred to as an actual black swan, not the concept in the book.

[wernercd]

"actual black swan, not the concept"

2nd paragraph of article, first sentence: "This defect is like a black swan—something special going on that isn't typical,"

So how is this an actual black swan - a bird with wings... and not a "black swan" - an unkown unknown (as described eslewhere)?