This document discusses strategies for driving technical change by addressing different types of skeptics. It identifies common skeptic personas like the uninformed, herd, cynic, burned, and irrational. It then outlines tactics for each persona, such as using expertise, demonstration, compromise, and publicity. The overall strategies are to ignore the hostile, harness the converted, and convince management. The goal is to identify the right tactics for different skeptic profiles to implement an effective change strategy.