An emergent system has multiplicative power.

All of the components combine with all of the others, creating a combinatorial cloud of possibility.

But this possibility can be overwhelming, intimidating.

"If you touch this, this other seemingly unrelated thing over there rockets into the sky".

Too much power!

The challenge of an emergent system is how to contain it, constrain it so that the things a user wants to do are easy, but accidental emergence is rare.

Happy emergence, not intimidating emergence.

Creating the right constraints is a matter of taste: a design exercise.