In this article, we won’t be discussing the “15-minute city,” which is a philosophical, if not ideological, proposal for an urban model. Instead, we’ll do something much simpler and more practical: some basic measurements.

For the basic check we want to perform, we won’t need supercomputing. We’ll do it through simple measurements of influence areas around fundamental infrastructures: shopping streets.

We will determine how far residents of two European cities, Barcelona and London, need to go to shop for everything they need at a store.