Professor Sauer held a very interesting presentation about the topic. He showed some examples of how mathematics impact the brain and how diverse the separate areas in our head react to different numbers and methods. He also made great use of his own experiences in this field he gained from working together with the university of Gießen and drew a fascinating connection between mathematics and medical science. Thus also non-mathematicians were able to learn to differentiate between calculating numbers and doing mathematics via scientific images of the brain and understand the complex modeling of such data, that in its theory even reaches to the model of tone. All in all a really impressive talk that showed how practical mathematics are of immense importance, even for scientific domains which actually do not have anything to do with numbers.