N+1 is an equation from Statistics. N is the number of bikes you currently own (Concept of the N Group). N+1= The Correct number of bikes for you to own at any given time.
I currently own 5.
2 vintage bikes, 1 is a touring bike (1986 Schwinn Passage),, the other is a Fixed Gear(1971 Nishiki Customj Sport, converted to a fixed gear). Also a road bike (Criterium bike, a Specialized Allez, set up for endurance riding and TT/Triathlon with aerobars), A Recumbent trike, and a klunker I keep at the lake.