Pranav Mistry explains his innovations which connects actions in the physical world with the digital world. I found some of his ideas very convenient, especially having the pen that transfers 3d drawings in the physcial world to the computer models. As an architect, that would be very convenient for us. I assumed this similar technology was already out there, for example when doctors perform virtual surgeries. However, he took the same idea to another level and made it for everyday life friendly.