202108271911 Usefulness is the central metric of tools.txt

# 202108271911 Usefulness is the central metric of tools
#usefulness #tool

Usefulness is the central metric of tools. 

Why? Usefulness is the *Arete* [[202108271912]] of a tool. At tool is basically similar to a virtue.

Usefulness can be measured by the reliabilty of something to solve a problem by achieving the wanted solution and not creating collateral damage.

1. The maximal negotiable obstacle
2. The quality of the solution