 This “deflationary” approach (Eronen 2013, 2015), where levels are reduced or deflated to more well-defined concepts, is also consistent with the idea that at some scales we may find peaks of regularity or predictability (Wimsatt 1994), or clusters of causal relationships (Potochnik &amp; McGill 2012). However, to what extent such peaks or clusters can be discerned in biological systems is an open question. It also remains to be seen whether the deflationary approach is sufficient for accounting for the role of levels of organization in biological theories and explanations.