Most of you drive a car. Or ride a bike. Or a scooter, or rollerblade, or something that propels you forward beyond your two feet. 

Think about how you steer. 

You make small movements in one direction, then small corrections in the other direction in order to continue going in a straight line. 

This is the same with diabetes management -- and Dr. Bernstein's Law Of Small Numbers. 

Small inputs (food & insulin) create the small movements -- and require only small corrections (glucose or insulin) when needed. 

If you contrast that with big inputs, in driving OR diabetes management, you'll go zooming in one direction or the other, requiring large corrections. 

Worst case scenario, you crash, with potentially tragic consequences.