Does it have a motor?
Back in the 80s there was a car commercial, where a small crowd of
doubters are looking over a neighbor’s new car. Amongst the comments
and questions about the options that make a car comfortable comes the
quip "Does it have a motor?"
It’s true that a car can be a car without a motor, or any of the
comfort options, but let’s face it – with no motor, it’s not worth
much. Same thing for a car in snow country without a heater, or a car
in the Mojave without working A/C. Some of the "comfort options"
become necessities depending on the intended use.
The same thing can be said for Operating Systems.