**Kindness ($F_{\text{Kindness}}$):** Kindness is measurable as the rate of coherence transfer from self to others at personal cost. It is the active, other-directed component of love.
Where:
\hat{T}_{j}^{(\text{out})} is the coherence transfer operator to agent j\hat{C}_{\text{cost}} is the self-coherence cost operatorDefinition (Kindness Metric): Let \mathcal{A} be an agent and \{B_j\} be a set of other agents. The Kindness metric is:
Where:
\Delta C(B_j) = coherence change in agent B_j\Delta C(\mathcal{A}) = coherence cost to agent \mathcal{A}