Comment Human recall slows down too. (Score 3, Informative) 281
Studies have also shown that as humans age their rate of recall also slows down, not because their brains are slower but because they have to navigate a database filled with entangled excess information. I've noticed that google searches by voice are vastly more word-accurate than siri searches by voice. But that's because google is doing something in the context of something else-- it has clues to context. Siri is trying to do free-form semantics over a much greater realm of possibilities. When you narrow Siri to a phone specific function, it does better than google. As the AI realm grows, perhaps to include sarcasm and slang, these services will require even more compute power to keep going.
However, these days, phone services are done on back end servers, so there is no great reason they should slow down in "modern" times.