I don't cry, but that made me. Note: Down's syndrome is obvious, so people are perceived as learning-disabled, but you get the whole range from no eye contact to "a bit slow but normal", basically the same intelligence & reactions as anyone else, but noticeably slower, which is nothing. It's not a particularly severe - in fact, usually pretty light - you won't be doing a maths degree, you will be average, but the main reason you'll be on benefits is cos it's visible. Autism is on average far more severe, but you're seen as normal so you're expected to get a job.