Every time I see an article about the advance of AI, with the vague sci-fi theme of "AI is now so good it is about to replace humans" I think of the many, many

Every time I see an article about the advance of AI, with the vague sci-fi theme of "AI is now so good it is about to replace humans" I think of the many, many stories I've heard like yours, where the FAANG seem unable to build even basic statistical systems, nevermind AI. Some articles suggest AI is on the verge of human sentience, meanwhile, in real life, I constantly encounter stupid algorithms, even from big companies with lots of money. The advertising companies are the worst. I bought a guitar and then, for the next 6 months, every ad I saw on every site was about guitars. How many guitars do they really think I'm going to buy in one year? It's really a once-every-two-or-three-years purchase, it doesn't justify the saturation I was exposed to. Or elevators. I'm in New York City and everyday I go into some building that has a terrible algorithm for its elevators. I don't need advanced AI, my life would be improved with even minor tweaks to most algorithms for elevators.