The geometric simulation approach was well and truly the first to converge genuinely and quantitatively towards the botany and biology of higher plants. Simulation brought the theoretical closer to the experiment by means of a concretization through a sub-symbolic use of the formal that translated – particularly in biology of shapes – into a requalification of the quantitative. In 1977, Jack B. Fisher and Hisao Honda published the first realistic geometric simulation of a Terminalia of less than five years of age. In 1978 the authors decided to extend their collaboration in order to test what use might be made of simulation in the case of adaptive geometry. Thus, from 1979 onwards, Fisher began noticeably to gradually cease active collaboration with computer plant simulators, considering that simulation could not offer him any increase in biological comprehension.