Cube Robots

I have seen this type of thing before, It's to demo that each individual 'cube' is a robot, and the idea is that ma$$ producing thousands of these in macroscopic form would be able to basically form a shape shifting robot, capable of becoming any shape for any task, and forming its own tools for jobs. The video's i have seen like this are just to demo the idea of a few cube robots working in tandom.

Thats just ....retarded. Cool, but retarded.

I've seen this before, its just moveable "magnet" mechanical arms...... this person covered te arms with something that i have no idea