yes, but unfortunately that is an exacting definition of the hyperloop compared to a device which actually was made and used regadless of it's commercial success and failings. The other IS snake oil.

Maybe so, but sticking to the site guidelines takes precedence, and you can always make your substantive point without breaking them.

fine I'll not wish shame on people knowing/understanding better, I guess it pays to be more direct and say they 'should be expected to know better' directly if they're able to write/understand at this level