I find this interesting. The parallels up to this point. My intent is not to pick fun on anyone but to just relook at the conversation just had.

We're talking about users not understanding the technology they use daily.

jwalton, in trying to give an example with spark plugs, allowed a more knowledgeable user or practitioner, mirimir, to give a more technically-correct description.

It seems to echo the main problem we are discussing in which users of a technology are not the same as those who design or know the nitty-gritty details of that technology.

Assumptions learned from day to day use in that technology (all cylinders have one plug, the google box is the only box I need) can so easily be proven incorrect when speaking to an actual expert in that field.