Macworld Negative criticism is fun, as Anton Ego so wisely observed. And I had a lot of fun this week watching Marques Brownlee’s polite demolition of the Humane AI pin, which he described as “the worst product I’ve ever reviewed.” Not just a solution in search of a problem, but a future in search of a present. Humane’s product, a chunky AI-powered pin that sits on your lapel and operates by voice and gesture rather than possessing any kind of screen, is riddled with problems. Some of these feel like temporary issues that will be ironed out in version 2.0, such as battery life, mild overheatin…