Second-order thinking is practical humility

Every solution creates a new situation.

Second-order thinking begins by asking what happens after the immediate result. If this works, what behaviour will it encourage? Which dependency will grow? Who will adapt, and how?

We cannot predict every consequence. That is precisely why the habit matters. It reminds us that interventions enter living systems, not static diagrams.

The point is not to become paralysed by complexity. It is to make fewer decisions that look brilliant for one quarter and confusing for the next three years.

Thinking one step further is often less about intelligence than humility.