I really should be more sympathetic and much more patient ... after all, they can't help that they have a serious disability!
How would I feel trying to function in life profoundly deaf and with tunnel-like focus? It would be brutal of course.
And then throw in the brain damage! I need to manage my expectations, treat them either like small children or an elderly person suffering from dementia. At least they're not peeing in their underwear!
It is remarkable to me how good they are on the xbox yet can't put a dish in the dishwasher, or pick up their mess off the floor ... but I suppose that's part of their disability, like Dustin Hoffman in Rainman.