Product Health: Signals in Tension

The Problem of Single Signal Optimization

In a world that pushes for incessant number optimization, it's easy to fall into the trap of pursuing signals in isolation — focusing on what grows fastest or looks most impressive (like number of new users or frequency of use).

This practice carries silent risks: the "cobra effect" — when trying to solve a problem with one signal, we end up generating unexpected negative consequences in other areas. Optimizing a single signal can lead to a product that "works", but generates unwanted human costs: addiction, anxiety, loss of time, or superficial use that doesn't deliver real value.

The Proposal: Sets of Signals in Tension

Instead of seeking the absolute signal, monitor the "pulse of the system" through sets of signals in tension. The intention is to monitor both the effectiveness of the solution and the user's well-being, focusing on removing unwanted side effects instead of just adding more growth numbers.

For each set, there is a success signal and one or more counterbalance signals. By observing the tension between them, you get a more comprehensive and balanced view.

The 3 Essential Sets of Signals

1. Tension: Speed vs. Quality of Activation