The Pixel 3's dual cameras are a tacit admission that AI can't do everything -- yet

Google's latest flagship smartphones -- the Pixel 3 and Pixel 3 XL -- are finally shipping to customers, and the reviews are unanimous: The rear camera and dual selfie cams are best in class. But as good as those cameras might be, they're a bit puzzling -- and sort of paradoxical. The original Pixel and Pixel XL have two cameras: one front and one rear. The Pixel 2 and Pixel 2 XL have two cameras: one front and one rear. And the Pixel 3 and Pixel 3 XL have three cameras: two front and one rear.