People take maps at face value because maps generally work. That is despite the fact that maps lie, even good ones. These lies, however, are usually ones of omission and generalization—if maps presented the whole truth of the landscapes they represent, they’d be difficult to use.
But some maps lie for other, less benign reasons, like a certain hurricane forecasting chart that is now fated to go down as one of the most boldly mendacious maps in history.