How can a group-dream machine from Christopher Nolan's "Inception" be built?
Imagine that anything going on in the world is interpreted by our consciousness to create our own vision which is similar to other visions but still not very much the same.
What may a robotic hypermarket of the future look like?
You approach one of touch screens to make an order, choose whatever you need and pay for it. A big arm attached to the ceiling with a magnetic ball starts moving, collect goods that have been purchased, in a large bag attached to it.