ser capaz

The more basic phenomenon [of understanding] is competence, capability [This interpretive thesis is prominent in the literature. See, for example, Dreyfus   (1991), Guignon   (1983), and Schmitt (1969)]:

In ontical discourse [ontischer Rede] we often use the expression “to understand something” [etwas Verstehen] to mean “to be able to manage a thing” [einer Sache vorstehen können], “to be equal to it” [ihr gewachsen sein], “to be capable of something” [etwas können]. In understanding [Verstehen], as an existentiale, that of which one is capable is not a What [Was], but rather being as existing [Sein als Existieren]. (SZ  :143) [BHTI:33]