Six months after the global broadcast, I sat in the United Nations General Assembly watching my three-year-old granddaughter Hope address world leaders.

"My name is Hope Lily Rossi," she said into the microphone, standing on a small platform so she could reach it. "And I can see things before they happen."

The assembly hall was silent. Two hundred delegates from around the world watched as a toddler prepared to demonstrate abilities that would have been considered impossible just a ...