I’ll initiate a discussion on what can be meant by ’affordance’. As a preparation you can read the first 4 sections of ["Ecological Empiricism"] by Vosgerau (Section 5 is about measurement and not really relevant). If you have the time, you can also read the first 4 sections of the paper by me and Marlize Lombard. It may seem unconnected, but I’ll try to explain why there is a connection to affordances.