I continued the work on dorsal, discovered the recessive phenotype and interpreted the phenotype postulating a gradient determining the dorsoventral axis. At that time, gradients were not widely accepted as mechanisms, in particular biochemists were highly sceptical, however the Tübingen influence made such models attractive to me.

I’d read some of the things that Don Glaser wrote, for example, and they’re imaginative physics, they’re not quite such good biology. There was a consensus that said you had to be able to reach out from physics and get to some of these things you’d like to, but then you have to know enough about the biology that the whole thing makes sense. And you really have to present things in such a way that a community develops. I didn’t realize that at the time, but certainly one of the important things of what I did had to do with enabling people who came from physics, or who came from biology, become a community, working on not just one little problem or piece, but somehow collectively working together toward trying to get an understanding.

Initially, the work was difficult because historically our people have been persuaded to believe that because they are poor, they lack not only capital, but also knowledge and skills to address their challenges. Instead they are conditioned to believe that solutions to their problems must come from 'outside'.

There was very much a real feel that we probably pretty much discovered every major fossil field in Africa. And in fact, some scientists even wrote that down at the turn of the millennia. It wasn’t a great time to be proposing to explore and push new, because we hadn’t succeeded, theoretically, being given the chance. All the big discoveries were in old sites. ... I was still an extraordinary believer in that there was more out there to be discovered. I just wasn’t demonstrating.

I have reasons for each of those books and certainly The Invisible Man in this moment of the Black Lives Matter protests and the continuing racial reckoning. Invisible Man really taught me to not see through anybody ever. But the book I give right now in this time of so much despair is Viktor Frankl’s Man’s Search for Meaning , where he really looks at people in the Holocaust and asks himself, why did some just sort of crumple up and die and others stayed resilient and strong? And that at the end of the day, no one can take our dignity away from us. And so I think that we have to be reminded right now that, between stimulus and response, there is a choice. And we’re in that moment. And I have seen myself personally so often that in the darkest times we can find our best selves and that’s our opportunity right now. And so I think for this moment, Tim, Man’s Search for Meaning should be required reading for all of us.