Protein engineering is a technology of molecular machines - of molecular machines that are part of replicators - and so it comes from an area that already raises some of the issues that nanotechnology will raise.

If we can reduce the cost and improve the quality of medical technology through advances in nanotechnology we can more widely address the medical conditions that are prevalent and reduce the level of human suffering.

People don't want to believe that technology is broken. Pharmaceuticals robotics artificial intelligence nanotechnology - all these areas where the progress has been a lot more limited than people think. And the question is why.

Nanotechnology will let us build computers that are incredibly powerful. We'll have more power in the volume of a sugar cube than exists in the entire world today.