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If the good Lord had intended us to walk he wouldn't have invented roller-skates.
— Willy Wonka • Willy Wonka & the Chocolate Factory

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The line playfully treats roller-skates as evidence that walking was never the intended arrangement. It reverses an argument about natural purpose by making an invention decisive. The joke gives a preference for gliding the weight of a pronouncement about how people ought to move.
Context reviewed