Take these two versions of my sentence from G4
Naked This: This was evidenced by the fact that I had somehow managed to smudge a long dark line down my cheek like a morbid mime tear.
Clothed This: This ineptitude was evidenced by the fact that I had somehow managed to
smudge a long dark line down my cheek like a morbid mime tear.
I find the second sentence so much more successful. The first begs the question "this what?" and even with a preceding context sentence, what "this" is can be a lot more ambiguous to the reader that the writer thinks it is.
This advice is still my go to rule for clearing up ambiguity.