memes

The claim mixes up how perception works and what people actually mean when they talk about top-down processing. White and gold viewers aren’t saying the pixels are literally white and gold—they’re saying the colors they perceive match most closely with that label, especially when those were the only options given. Many of them describe seeing pale blue and brown, which are the actual pixel values. That’s not bottom-up processing in the strict sense, because even that perception is shaped by how the brain interprets the image based on assumed lighting. You don’t just see wavelengths—you see surfaces under conditions your brain is constantly estimating. The dress image is ambiguous, so different people lock into different lighting models early in the process, and that influences what the colors look like. The snake example doesn’t hold up either. If the lighting changes and your perception doesn’t adjust, that’s when you’re more likely to get the snake’s color wrong. Contextual correction helps you survive, it doesn’t kill you. As for the brain scan data, higher activity in certain areas means more cognitive involvement, not necessarily error. There’s no evidence those areas were just shutting things down. The image is unstable, people resolve it differently, and that difference shows up in brain activity.