Reacting to something is orders of magnitude easier than doing something proactively.

Conversations give you a constant stream of things to react to, mutually.

That's one of the reasons they're so generative.

In each conversation turn, one person says things, some of which are more interesting than others.

The other conversation partner picks the subset they find most interesting and builds on that with their own utterances.

This process then repeats.

With two curious, open people, this can be a transcendently generative experience.