Experiments were not attempted at that time, we did not believe in the usefulness of the concept anyway, and I finished my thesis in 1962 with a feeling like an artist balancing on a high rope without any interested spectators.
The nearer people approach old age the closer they return to a semblance of childhood, until the time comes for them to depart this life, again like children, neither tired of living nor aware of death.
Every collaboration helps you grow. With Bowie, it's different every time. I know how to create settings, unusual aural environments. That inspires him. He's very quick.