Physical and Virtual World
This gives us (designers) a great deal of possibilities. We can combine qualities typical of the virtual world – speed, limitless, waste-less, collaboration, flexibility, etc. – with the ones of the physical world – multi-sensory, three-dimensional, aging, light-affected, etc. Furthermore interactions between people and physical-virtual objects can become (and create new) relationships involving emotions, identity, history. While interactions imply reciprocal actions, relationships also mean reciprocal growth, affection and predictability.
It is a general trend, boundaries are more or less rapidly dissolving, like in nature where states are so gradual that changes are almost imperceptible to us. Think about the distinction between near and far, local and global, young and old, man and woman, inside and outside. A boundary marks a change: a change is an opportunity and it is also more or less traumatic depending on how big are the differences between before and after. It is possible that this general evolution towards melting boundaries will bring us peace and serenity. Happy Valentine's day.

