In the book How to Measure Anything by Doug Hubbard, this section has stuck with me for a long time. In engineering, things often seem impossible to measure. Especially the soft, intangible things. But if something is valuable, it should be observable in some way.

After this book, I started asking much more: how can we observe the success we are after? (Which often opens the question of what success actually is.) And then trying to incrementally find a way to capture that observation into a measurement.