Not long after the display launched, Christine, the manager of the Taza Chocolate Bar, makes a suggestion.

You always listen to Christine, because she radiates a quiet, no-nonsense practicality. She listens to your futuristic ramblings, deftly inserts a question or suggestion, listens some more, then maybe adds a few more suggestions.

Most of the time, her ideas bump the project up a notch.

Her idea: Why not tune the display to Taza? Instead of moving a flagman’s flag, why not spin an image of a granite grinding wheel. Granite grinding wheels are what Taza uses to create their gritty chocolate. 

Christine even has an idea for the background image, which she shot with her phone while you were standing there: the machine that pulverizes the ground cacao beans into chocolate.

You look at the image on her phone. Like it. 

She sends it to you. 

The new modification will require a slightly different servo, a continuous servo, which can rotate in two directions, instead of just going to fixed points and stopping. And some new code. 

But... worth it.