Auti-Sim is a very short experience. But then, so is having a railroad spike driven into your ear. That’s the basic idea behind the horrifyingly overwhelming dose of auditory hypersensitivity disorder, which was put together as part of the Hacking Health Vancouver 2013 hackathon. The short version is, you’re an autistic child on a playground, and everything seems perfectly normal. Then more sounds start creeping in. Voices, whispers, screams, footsteps, swingsets creaking, merry-go-’rounds whirring. All distinct, yet inseparable, like the whole world is trying to stampede its way into your head, trampling your eyes and ears. Auti-Sim hurts. But it hurts for a reason.