Stimulation generalization refers to the formation of conditional organisms that have learned to respond to a certain stimulus in a specific way. Similar stimuli respond to the same behavior, and stimulus differentiation is the selective strengthening and regression of the organism to learn to respond differently to conditioned stimuli and stimuli similar to conditioned stimuli. According to the above definition, Which of the following statement is incorrect :. ['"Once bitten by a snake, ten years of fear of well ropes" belongs to the stimulus generalization.', '"Looking horizontally into a ridge and a peak, with different heights and distances" is a kind of stimulus differentiation.', 'In order to highlight the brand, the manufacturer uniquely designs the packaging to try to make customers differentiate.', 'After a brand of toothpaste becomes a famous brand, the manufacturer also names the cosmetics it produces under the same brand, using the generalization of customer stimulation.']