"Do we really have to deride others..."
YES. Oh yes, we absolutely do. Not knowing how the Carnot cycle applies to your car's engine is a non-issue unless you're the one designing the damned thing. But if your work involves driving yet you can't tell me how many pedals are in your car so you need a chauffeur to get around, I'll laugh you out of existence without the slightest bit of remorse.
Biting the hand that feeds IT
