Nearly fifteen percent of the world's population lives with a disability, yet this massive chunk of humanity is still routinely excluded from opportunities. Sharing her experience growing up with an autistic sister, disability inclusion advocate Meghan Hussey illuminates the path towards an inclusive future in four steps, and it starts with an attitude check on assumptions and stereotypes. Designing a world built for everyone is not a "nice to have," Hussey says it's critical to the fabric of society.