An 11-year-old Florida girl just set a Guinness World Record for acting like a human calculator. Sanaa Hiremath broke the record by solving a 12-digit multiplication problem in 10 minutes – all in her head. Hiremath is diagnosed with autism, and her parents say she actually failed math at school before switching to home schooling – quickly demonstrating skill with numbers. What was your best skill as a child? How has our understanding of autism changed over the last 20 years?