ScienceThe LoomBuilding the World from the Brain OutByCarl ZimmerPublished January 9, 2004ShareTweetEmailOliver Sacks muses on how we construct our perceptions of reality. (Via ALDaily.)DON'T MISS THE REST OF THIS STORY!Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.Sign Upfor your free account. Or get a Premium Subscription, just $19.SUBSCRIBE