Mental Models Daily
Explore
Menu

No. 133 · Work · Statistics and Probability

Forcing Function

Shape the situation so the right action becomes the easiest, or the only, path.

A forcing function is a commitment or constraint that makes the desired action unavoidable. Instead of relying on willpower, it reshapes the situation so follow-through becomes the only realistic path, through deadlines, public promises or designs that block mistakes.

To use it, build commitments into your environment: automatic savings, booked classes, shared deadlines. Choose constraints that push without crushing, and remember they reduce flexibility, so use them only for goals you are confident about.

In the Almanac

“Sink the boats”, 207 BC · “Volvo Cars”, 2017

Both stories in full, three ways to use it and where it misleads.

Get the Almanac

Listen · Watch

Forcing Funtions

Questions

What is Forcing Function?

A forcing function is a commitment or constraint that makes the desired action unavoidable. Instead of relying on willpower, it reshapes the situation so follow-through becomes the only realistic path, through deadlines, public promises or designs that block mistakes.

How do you use Forcing Function?

To use it, build commitments into your environment: automatic savings, booked classes, shared deadlines. Choose constraints that push without crushing, and remember they reduce flexibility, so use them only for goals you are confident about.

When does Forcing Function matter?

Forcing Function is one of the 43 mental models for work, the situations where you ask: How do I get the right things done? Within that, it belongs to “Getting started and keeping going”, alongside Activation Energy, Catalysts and Compounding Effect.

What is an example of Forcing Function?

Two stories show it at work: Sink the boats (207 BC) and Volvo Cars (2017). Both are told in full in The Mental Models Daily Almanac, which has two stories for each of its 365 models.

Which mental models are related to Forcing Function?

Burn the Boats, Activation Energy and Hofstadter’s Law. Forcing Function itself comes from statistics and probability.