Is it possible to build a place without gravity? - Do you think there is anything between the known particles (and Planck length 10^-33) and your hypergraphs (at length 10^-93), such as another set of "elementary" particles? - Will technology allow for one true universal language [for the deaf, blind, romance languages, Arabic languages, Asian languages, computer languages, etc...], eliminating the need for translations? - Who is the leader in information technology at the moment (my guess is China!)? - Is there a relationship between computational irreducibility and the uncertainty principle from Quantum Mechanics? - Is there a formal definition of Number? - Why all electrons are same? - What temperature does a laser have? - How does a laser work? - How can galaxies retain their shape for billions of years? - Will it be possible to tell a joke in a symbolic discourse language. Who (and what) may find it funny? - You once said that when you were starting out, Feynman gave you a collection of his mathematical tricks for integration, which you didn't end up using. Have you published this? I would really really like to see his notes!