 Finally, “experience” (Erfahrung) involves the combination or “synthesis” of these perceptions (Wahrnehmungen) by the categories, particularly the categories of relation (i.e., substance, cause, community). As Kant puts it, “experience is cognition through connected perceptions (durch verknüpfte Wahrnehmungen)” (B161; cf. B218; Pr 4:300). Experience is thus the most cognitively demanding and sophisticated form of having a cognitive relation to an object.