The most important thing to take into account is, given a particular proposal for a discrete geometry, what the scientific and/or philosophical background is of the author(s) and, related to that, what their intentions are. Are they logicians, mathematicians, computer scientists, physicists or philosophers (to list the five most frequently occurring cases)? Do they want to solve a mere technical, a physical or a philosophical problem? Are they worried about foundational aspects or is the object of their research to further develop existing theories? It is worthwhile to go into some more detail for each of the five types of author(s) mentioned to illustrate these questions.