Definition
Small steps is Rosling's prescription for action when the system is uncertain and the stakes are high: prefer reversible, modest, measurable interventions over dramatic policy lurches. Take a small step, observe the result, adjust, take the next.
It is the corrective for the Urgency Instinct — the panicked feeling that "we must act now, decisively" that drives many of the worst policy mistakes.
Why it matters
How it works
The four properties matter together. Reversibility means you can roll back if the result is bad — a pilot in one region, a six-month trial, a budget you can stop. Modesty means the resource at risk is small enough that failure is survivable. Measurability means you have defined in advance what success and failure look like. Speed means the loop closes fast enough that you can take the next step within a useful horizon.
Without measurability, small steps degenerate into endless incremental motion with no learning. Without reversibility, they cease to be small in the sense that matters. The four together create a learning loop that converges on truth faster than either inaction or a single bold move.
The frequent objection is "we don't have time for small steps." Rosling's answer was that we usually do, because the supposed urgency is itself produced by the Urgency Instinct, and the cost of a misfired big intervention is typically larger than the cost of a few months of measured iteration.