The deep affection people have for Disneyland is rooted in a psychological concept known as "nostalgia-induced safety." For many, the park represents a "liminal space"—a place outside of normal time where they can escape the anxieties of adult life. From a design perspective, Disney uses "Smellitzers" to pump scents like vanilla and popcorn into the air, which are scientifically linked to positive memory triggers. The use of "forced perspective" in architecture makes the buildings feel cozy and non-threatening. Furthermore, the "character integrity" (the rule that Mickey is always Mickey) provides a sense of reliability and wonder that many adults find comforting. It is essentially a multi-sensory "cocoon" that rewards the brain with dopamine through a combination of familiar stories, impeccable cleanliness, and a total immersion that blocks out the "real" world.