What becomes collaboration most

What makes the PC successful as a personal productivity tool has also been its biggest obstacle towards better collaboration, that it is personal. And the more powerful PCs become, they more difficult it is to collaborate with them. The primary collaboration tool today is still what it was ten years ago: sending an email attachment with a Powerpoint deck or Word document back and forth between two or more parties. It is a serial form of collaboration: I put together my work product, send it t