While the relation between visualization and scientific understanding has been a topic of long-standing discussion, recent developments in physics have pushed the boundaries of this debate to new and still unexplored realms. For it is claimed that, in certain theories of quantum gravity, spacetime ‘disappears’: and this suggests that one may have sensible physical theories in which spacetime is completely absent. This makes the philosophical question whether such theories are intelligible, even more pressing. And if such theories are intelligible, the (...) question then is how they manage to do so. In this paper, we adapt the contextual theory of scientific understanding, developed by one of us, to fit the novel challenges posed by physical theories without spacetime. We construe understanding as a matter of skill rather than just knowledge. The appeal is thus to understanding, rather than explanation, because we will be concerned with the tools that scientists have at their disposal for understanding these theories. Our central thesis is that such physical theories can provide scientific understanding, and that such understanding does not require spacetimes of any sort. Our argument consists of four consecutive steps: We argue, from the general theory of scientific understanding, that although visualization is an oft-used tool for understanding, it is not a necessary condition for it; we criticise certain metaphysical preconceptions which can stand in the way of recognising how intelligibility without spacetime can be had; we catalogue tools for rendering theories without a spacetime intelligible; and we give examples of cases in which understanding is attained without a spacetime, and explain what kind of understanding these examples provide. (shrink)

While recent studies suggest that augmented learning employing smart glasses increases overall learning performance, in this paper we are more interested in the question which repercussions ALSG will have on the type of knowledge that is acquired. Drawing from the theoretical discussion within epistemology about the differences between Knowledge-How and Knowledge-That, we will argue that ALSG furthers understanding as a series of epistemic and non-epistemic Knowing-Hows. Focusing on academic knowledge acquisition, especially with respect to early curriculum experiments in various STEM (...) disciplines as investigated by the BmBF “Be-Greifen” project, we take the Be-Greifen holo.lab setup as an example for showing that ALSG shifts the learning focus from propositional knowledge to epistemic competencies, which can be differentiated as “grasping”, “wielding”, and “transferring”. (shrink)