In the recent
Harvard Business Review article "The Science of Thinking Smarter"
[1], molecular biologist John Medina discussed stress implications of neuroscience research, especially the impact on learning. When I read that stressed people do poorly at math, the NASA engineer in me asked what productivity insights we could learn from the those four familiar operations. For a bit of variety, I'm keeping this short (!), so please contribute your insights. Happy calculating!
Addition
"Depend upon it there comes a time when for every addition of knowledge you forget something that you knew before. It is of the highest importance, therefore, not to have useless facts elbowing out the useful ones." -- Arthur Conan Doyle