Evolution of Dip-Buying, from Kim Zussman
1999: Buy dips after a week or two
2000: Wait two years to buy dip
2006: Buy dips after a day
2007: Buy dips before they occur
1999: Buy dips after a week or two
2000: Wait two years to buy dip
2006: Buy dips after a day
2007: Buy dips before they occur