I'm asking the Throbbing Brain for some career advice. Thinking long-term, since I plan on staying put for a while longer, but I've noticed that a lot of positions ask for 5 years' experience. Why is 5 years a magical number? Does one suddenly attain deep insights into zoning five years from one's start date? And just how flexible is this five years? Does education or where one's previous 4.89 years experience were gained factor much into it? I'm being semi-facetious here, but not entirely, since so many jobs mention it.