Dan McNe Posted about 1 year ago Ruth Chang: How to make hard choices Upon further looking into the speakers publications, she is quite well acquainted the concepts of incomparability and incommensurability. If you still hold that there is no way to make a _rational_ decision between choices which are not placed on a linear scale, then my suggestion is that it is exactly our values (safety, flexibility, money, social concerns) that allow the construction of a map from a lattice valued logic to a linear valued one. Finally, some research suggests that flexibility is (or ought to be) highly valued -- at least in early stages. (I believe there is a TED talk about this.) I think the speaker will find that in her own career choices as well.