Will A.I. go rogue like Waluigi from Mario Bros., or become the personal assistant that Bill Gates says will make us all rich?
Fortune · Courtesy of Nintendo

The Super Mario Bros movie earlier this year broke box office records and introduced a new generation to a host of the franchise’s iconic characters. But one Mario character that wasn’t even in the megahit is somehow the perfect avatar for the 2023 zeitgeist, where artificial intelligence has suddenly arrived on the scene: Waluigi, of course. See, Mario has a brother, Luigi, and both of them have evil counterparts, the creatively named Wario and Waluigi (because Wario has Mario’s “M” turned the other way on his ever-present hat, naturally). Likely inspired by the Superman villain Bizarro, who since 1958 has been the evil mirror image of Superman from another dimension, the “Waluigi effect” has become a stand-in for a certain type of interaction with A.I. You can probably see where this is going …

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The “Waluigi effect” theory goes that it becomes easier for A.I. systems fed with seemingly benign training data to go rogue and blurt out the opposite of what users were looking for, creating a potentially malignant alter-ego. Basically, the more information we trust to A.I., the higher the chances an algorithm can warp its knowledge for an unintended purpose. It’s already happened several times, like when Microsoft’s Bing A.I. threatened users and called them liars when it was clearly wrong, or when ChatGPT was tricked into adopting a rash new persona that included being a Hitler apologist.

To be sure, these Waluigisms have mainly been at the prodding of coercive human users, but as machines become more integrated with our everyday lives, the diversity of interactions could lead to more unexpected dark impulses. The future of the technology could be either a 24/7 assistant to help with our every need, as optimists like Bill Gates proclaim, or a series of chaotic Waluigi traps.

Opinions about artificial intelligence among technologists are largely split into two camps: A.I. will either make everyone’s working lives easier, or it could end humanity. But almost all experts agree it will be among the most disruptive technologies in years. Bill Gates wrote in March that while A.I. will likely disrupt many jobs, the net effect will be positive as systems like ChatGPT will “increasingly be like having a white-collar worker available to you” for everyone whenever they need it. He also provocatively said nobody will need to use Google or Amazon ever again when A.I. reaches its full potential.