 As a result, ideas about how theoretical geometry of whatever kind relates to the space around us had become much more sophisticated. From the standpoint of pure mathematics, the situation was one of pluralism. The truth of geometry was no longer to be taken for granted, notoriously the Kantian viewpoint was generally abandoned. Choosing a physical geometry had become, in some measure, an empirical question —if we assume Poincaré was not right. Philosophical ideas about the intelligibility of geometry had also deepened. Perhaps also from the standpoint of general science one ought to consider a pluralistic outlook.