Introductory remarks

Abstract

The logo of the Institute of Advanced Studies Kőszeg (iASK) refers to a more than 100 – year old, but still topical problem: how to join 9 dots arranged in a box - like square format with four straight lines without lifting the pen. The solution is only possible if, while moving the pen, we get out of the box. The box in fact does not exist, it is only a self imposed virtual limitation. Even more, the task can be solved also by using just one straight line, the only problem is that in order to achieve that the earth has to be circled twice. But why not circle the earth twice? We certainly have to consider the cost/benefit aspect as well but the lesson must not be forgotten: we shoud think twice before calling the solution of a task impossible