During my first years of study in computer science and physics, and a one year internship at MIT, I became deeply interested in the modelization of complex systems and the interfaces between disciplines, essentially physics and biology. I became attracted by the PCS master and have not been disappointed. This was one of the richest year in all my studies. I then did a PhD thesis in the Laboratoire de Physique Statistique (LPS) of the ENS in Paris on the biomechanics of tumors. I am now a permanent researcher in SANOFI in a group studying in silico biology.