Originally Posted by
BluesDawg
Overlap is a good thing. Without it you'll do a lot more shifting on the front.
And, at least with my motor, the small difference between near-identical ratios sometimes represents a welcome difference between almost and exactly right gearing for a given situation.
It seems that many rookie riders and even some with experience assume the small ring is just where you find your low gears, medium just for medium and large just for high.