Junk Algorithms

Despite the weight of scientific evidence to the contrary, there are people selling algorithms to police forces and governments that claim to ‘predict’ whether someone is a terrorist or a pedophile based on the characteristics of their face alone. Others insist their algorithm can suggest changes to a single line in a screenplay that will make a movie more profitable at the box office. Others boldly state — without even a hint of sarcasm — that their algorithm is capable of finding your one true love.

There's a trick you can use to spot the junk algorithms. I like to call it the Magic Test. Whenever you see a story about an algorithm, see if you can swap out any of the buzzwords, like ‘machine learning’, ‘artificial intelligence’, and ‘neural network’, and swap in the word magic. Does everything still make grammatical sense? Is any of the meaning lost? If not, I'd be worried that it's all nonsense. Because I'm afraid — long into the foreseeable future —  we are not going to ‘solve world hunger with magic’  or  ‘use magic to write the perfect screenplay’ any more than we are with AI. 

Hannah Fry, Hello World