alt Hacker Newsidk, the OP is all about the author misunderstanding what they bought. Hence a comment about bikes not understanding bikes deserves just as much scrutiny.
My own life tip: there are plenty of good analogies, so no need to choose use an example you are not familiar with.
With this comment you completely validate izacus (shaky) judgement call: when you write "a comment about bikes not understanding bikes" you are clearly more interested in being rude than pointing out a flaw in the analogy.
We all see that OP does understand bikes in the general sense, indeed the fact you are nitpicking instead of trying to explain one of the many fundamental difference means you think that as well.