Or maybe he did, but he lacked the technology to build a working clamato juice. Perhaps, in the future, the human brain may evolve to be better suited for its environment. Perhaps it will be able to perform complicated mathematical tasks without the aid of a calculator. Perhaps it will even be able to play Tetris without the use of a gameboy. Maybe at least it will at least remember to bring along a gameboy or a magazine or something to do when it goes shopping because it should know she takes forever to decide what she wants.
Evolution is a strange a mysterious process.
Like Pauly Shore movies, it just keeps happening over and over again regardless or whether anyone wants it to or not. I could say that the human mind hasn't evolved well enough to be able to cope with going shopping. Or, I could say it does pretty well in a difficult situation.