Cognitive surplus results when leisure time and available tools allow us to engage in creative acts. It is a term that was introduced by Clay Shirky which pertains to the synthesis of the excess of people's energy, time and creativity leading to productivity sharing and creation.
I'm guessing 8? But I'm not 100% positive
In Excel the sum B2 and B6 simply means that B2 and B6 Numbers are adding to get a Sum, it actually like the normal Calculator, but in Excel it helps to do the calculation of your your data simple and easy, there is no hard work.
