Internet of things (IoT) is very powerful in helping us define such grammar. When furniture and other objects in my living room start transmitting small packets advertising their location respective to a fixed origin along with their volumetric data, we can supply context to our virtual objects. The virtual objects can query information about its world with respect to its position and interact with physical objects in its surroundings. This is quite easy. Yes, it would mean we re-engineer the way we design our furniture and homes. The next generation homes will include micro location beacons supporting indoor mapping by default.