Mike Ash writes:

Perhaps *I* wasn't clear. Your message had, as far as I could tell, one
single reasonable interpretation. It just happened that the meaning of
that single reasonable interpretation doesn't line up with what you
meant to say. Thus, it was unclear, but this was only evident after you
explained yourself.

But the standard of reasonableness was yours, not mine. Given the context, I
felt certain that it would be correctly interpretation, since the
interpretation you gave it would make no sense.