> Sitting in on a talk on autism diagnoses, one of a series of scientific talks, watching an animation they used as a diagnostic aid, hearing everybody around me laugh as if the shapes on the screen made sense, only then truly understanding myself, and feeling more alone than I have ever felt before or since.

Anybody have any idea what diagnostic shapes he's talking about?

Social Shapes Test https://www.cmu.edu/corecompetencies/collaboration/resources...

Web version here, if you want to see what it's like https://psytests.org/arc/ssten.html