p 71
... cognition viewed not as activity in some mental realm, but as a pattern of behavior that is relevant to the functioning of the person or organism in its world.
p 77-78
About 'problem solving'[see: the concept of "declaration" in Giraudoux]
Breakdown: the interrupted moment of our habitual, standard, comfortable 'being-in-the-world'. Breakdowns serve an extremely important function, revealing to us the nature of our practices and equipment, making them 'present-to-hand' to us, perhaps for the first time.
p 78
A design constitutes an interpretation of breakdown and a committed attempt to anticipate future breakdowns.
p 78
Because of what Heidegger calls our 'thrownness', we are largely forgetful of the social dimension of understanding and the commitment it entails. It is only when a breakdown occurs that we become aware of the fact that 'things' in our world exist not as the result of individual acts of cognition but through our active participation in a domain of discourse and mutual concern.[see Sartre: "etre-en-situation", "engagement"] [Communication seen as commitment instead of as transmission of information.