In every area of inquiry that we're involved in, suffice it to say there are an awful lot of interesting pivotal open questions that remain, ... Are we likely to witness revolutionary ideas on a par with what Einstein was able to do in 1905? It's difficult to conceive of a whole group of people being able to cause that much of a shift in our world view within such a short period of time, let alone one person. It was really an intellectual tour de force that’s been unrivaled through the ages. But something has to change, and there are an awful lot of questions we have with no answers to them.