New Scientist’s Last Word section turned to its readers with a question that sits at the boundary of neuroscience and philosophy: if what we see is only our brain’s interpretation, what is the world actually like? The replies collected in the article take the premise seriously, treating perception as something the brain builds—not as a straightforward mirror of external reality.
Because the feature is a reader-response column, it does not claim to resolve the question. Instead, the respondents offer scientific explanations for why our conscious experience might be indirect, shaped by the senses and neural processing rather than by direct contact with the world. The common thread across the replies is that seeing involves interpretation. Beyond that, the answers vary, and the article leaves the deeper mystery intact: if all experience is mediated by the brain, how much of the world can we ever truly know?