TED was built on a simple, stubborn belief: that ideas worth spreading can change the world; not all at once, but the way real change tends to happen. Quietly. Outward. One person, then another.

That is the whole idea behind a ripple.

When we chose Ripple Effects as this year's theme, we were naming something we'd watched happen on the TEDx stage year after year. An idea is shared with a single room. Someone carries it home. They repeat it at a dinner table, apply it in a classroom, build on it in a business, pass it to a child. The talk ends, but the idea keeps moving and where it lands is rarely where it began.

Mississauga is the right place for this. A city of many origins and many stories, it has always been a place where ideas arrive, meet, and multiply. The talks shared on our stage don't stay on the stage. They move into the neighbourhoods, the classrooms, the small businesses, and the conversations that make this city what it is.

That is what TEDx exists to do which is to take an idea worth spreading and give it somewhere to begin. The rest belongs to the community that carries it forward.

A single idea, dropped into the right room, in the right city, becomes something no one can trace to a single source.

The effects ripple outward. They always have. On to the next.