video1.0<iframe src="https://www.loom.com/embed/efdfbd91a5a940b3a1b180c023ffe2c2" frameborder="0" width="1086" height="814" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>8141086Loomhttps://www.loom.com8141086https://cdn.loom.com/sessions/thumbnails/efdfbd91a5a940b3a1b180c023ffe2c2-00001.jpg78p: One central idea of the passage is that a: sometimes materials behave contrary to expectations. ; systems can be described in terms of inputs and outputs. ; models of materials have both strengths and weaknesses. ; properties of systems differ from the properties of their parts. ;