1953 birth in Eindhoven, NL 1971-79 education in biology and architecture 1980 question of pattern formation of sunflower seeds: “How can I produce these spirals without a pencil?" 1987 algorithm which develops phyllotactic patterns 1990 first scientific publication and first version of Apex 1994 PhD - architecture in biology, biology in architecture 1996 publication of The Stack-and-Drag Model 2015 introduction of the concept of Phyllotactic beauty |