Recent research has recorded for the first time how people actually make decisions. It turns out that people use a limited set of decision -making strategies or techniques. We use them from the time we're kids who are taking "multiple-guess" tests in school resort to these techniques for narrowing our choices, in our personal lives, in college, and even in our business activities. Take for instance in our carport net business,we do sometimes decide to cut it 10m x 5m instead of 5m x 5m. The researchers speculate that these techniques,or "fast and frugal heuristics" as the authors of Simple Heuristics call them, are hard-wired into our brains, part of our evolutionary survival package.