EXCLUSIVE! RETHINK AUTISM: $3 million for New York City-based ReThink Autism from seed funders, philanthropist Jonathan Sackler and social investor, Matthew Greenfield, plus midas-touch Connecticut firm, Seavest Capital Partners. Talk about picking a big, gnarly problem: approximately 1 in 110 children in the U.S. are diagnosed with autism. ReThink Autism delivers top-notch training to educators working with autistic children. The company is tapping the world's experts and putting their lessons on video. The strategy could work for other special-needs verticals but investors say this sector is deep enough to build a valuable business.