PPM, which stands for Plus Plus Minus, is a technique for discussing or criticizing ideas. The basic rule: You must state tw…
Homemade, by Eric M. Bienstock
Plus Plus Minus
Illustration
by Eric M. Bienstock
by Eric M. Bienstock
PPM, which stands for Plus Plus Minus, is a technique for discussing or criticizing ideas. The basic rule: You must state tw…