I (at least once) talked about expecting a reader to have a decent reading comprehension. I know it was during a discussion on "show don't tell." I expect a reader to be able to "get it" without me spelling it out for him (assuming I do my job right).
The first feedback I got today on my new story made my day. The reader got it! I mean, really got it! Short stories typically have a twist. With this story, the twist is very, very subtle. But it's there and a reader clearly understood it.
Hooray for SOL readers!