In Zach Snyder’s 2004 movie Dawn of the Dead, a zombie apocalypse forces a bunch of survivors to take refuge and fortify themselves within a shopping mall. All the goods they ever wanted are at their fingertips and they remain in the mall for quite some time. However, they eventually become bored and attempt to break out from the mall in search of pastures new. Some make a successful escape to a nearby island whilst the not-so-lucky ones get … well, they get eaten alive by the walking dead.
Many parallels can be drawn between the movie and microeconomics’ utility maximising consumer. For instance, hundreds of mindless zombies wondering around a shopping mall, their natural instincts forcing them to search for … no, not brains … the combination of goods that make up their optimal consumption bundle!
Even the zombies themselves, you could analyse the way they move and determine that it is a random walk. A zombie will move towards sound, so as it stumbles in the direction where it thinks it heard something, it’s momentum will keep it going that way. But, if it hears a more promising sound in a different direction then it will drunkenly change it’s direction. The zombie walks in a direction determined by random noises, therefore, a random walk.
Additionally, when you examine the film as an economist, the plot is pretty predictable. In micro, the utility maximising consumer eventually reaches a bliss point where he no longer wishes to consume a particular good and opts for a different good entirely. It was inevitable that the survivors in the mall would reach their own satiation points and seek out new products.
You could also argue that the symbolism of Dawn of the Dead critiques American Consumerism. The survivors should be happy, they have all the consumer goods they could ever wish for and yet they still want more. They will never be satisfied and, as Karl Marx predicted of the capitalist system, their very nature leads to their own downfall.