Friction, And How Little Of It Is Needed

The amount of inconvenience required to change a routine behaviour is far smaller than people assume. A few seconds is often enough, and the reason lies in when the decision happens.

Routine choices are made in a very short window

A habitual action is initiated quickly, with little weighing of alternatives. The window between cue and action is narrow, and whatever is easiest within it tends to win.

An obstacle placed inside that window does not need to be difficult. It only needs to arrive before the action completes, converting an automatic sequence into a moment of choice.

Once the choice becomes explicit, other considerations get a hearing. Most of the effect of friction is simply the restoration of deliberation.

Distance and containers do most of the work

Moving something to another room, or into a closed container, reliably reduces how often it is used. Nothing has been forbidden, and the additional effort is close to trivial.

The same applies in reverse. Leaving equipment out and prepared raises the frequency of the activity it supports, because the setup step no longer stands between intention and action.

People often resist this as too simple to matter. The resistance comes from evaluating the obstacle with deliberate reasoning, which is not the system that will encounter it.

Friction works best before the sequence starts

An obstacle placed at the beginning of a chain is far more effective than one placed later. Once several steps have been taken, the pull to complete the sequence is strong.

This is why removing an application from a phone works better than intending to use it less. The first step, opening it, has been made expensive; every later step is untouched.

It also explains why obstacles that can be removed once and then stay removed are weak. If the friction is defeated permanently by a single action, it protects nothing.

Too much friction produces resentment rather than change

Obstacles large enough to be genuinely annoying tend to be dismantled, and often with hostility. The person removes the barrier and the behaviour returns with the additional satisfaction of having beaten it.

Small obstacles avoid this because they never rise to the level of a contest. They divert rather than confront, and diversion is less likely to be resisted.

The design principle is to make the obstacle just large enough to be noticed and small enough to be ignored as an insult. That band is narrower than most people expect and lower.

The same lever applies to work you want more of

Reducing the number of steps between sitting down and starting is the most reliable way to increase how often something happens. Open the document the night before, leave the tools where they will be used.

Each removed step matters more than its duration suggests, because each is an opportunity to stop. Fewer opportunities to stop produces more completed starts.