sorry to be that person in the comments, but is there any video of how exactly it is expressive? the photo of the messy table doesn't really conveys the idea or explains how exactly this lamp on the robotic arm behaves.

The Apple lab has a video demonstrating the difference between expressive and functional:

https://machinelearning.apple.com/research/elegnt-expressive...

I think this is the goal of LeLamp.