I am the 4th person you've responded to in this thread.

We already know. There are little username thing-ys that communicate that. Is there something you are trying to add?

This only makes sense in a back and forth with one other person:

> Guess you were't capable after all.

No...? The assertion about being able to understand the reverse case went out to anyone reading the comment. This is clearly a community forum, not some kind of private messaging system. Comments are not directed towards anyone in particular.

Stop and think. If you actually did somehow mistakenly believe it was a one-on-one with another person, why would you but your head into the conversation? That would be completely illogical. There is a curious contraction here.

It's the "after all" that implies you thought you were responding to one person the whole time, which is why I corrected that.

You can rephrase it that way, sure: "After all this (being explicitly told that there is an inverse case), you still weren't capable of understanding what was written."

The first half of your comment does not logically precede that, though. There is no such implication.