In this episode - unlike the other also titled "Work and Heat" - we actually cover the content of Chiara's book and go through some readings. We look at Work and Heat through the lens of Constructor Theory. How so-called "work-like" transformations are reversible but "heat-like" are not and hence we have an avenue to an exact expression of the second law without approximations or talk of what will "most likely" or "probably" happen. We also go over some discussions about the universal constructor.