The term ‘teleology’ comes from the Greek term ‘telos’, meaning a ‘goal’, an ‘end’, or that toward which a thing tends.
We often skip over or assume (or ignore?) the notion of teleology. But without it, we cannot say that something is ‘wrong’ with anything. We cannot speak of anything functioning ‘poorly’ or ‘well’, or of somthing having been ‘poorly’ or ‘well’ designed. If things don’t tend toward any goal or end, we have no reason to be either pleased or disappointed with any given thing.
In this imaginary conversation, James Chastek cleverly points out how science cannot speak of whether or not the forces in nature are ‘blind’ or of some other kind. All we can do is measure the result of these forces/causes – of whatever sort(s) they are.