Behavior charts don’t usually fail because kids don’t care. They fail because the system wasn’t built to meet real needs. Too many charts focus on compliance over motivation. Public tracking that leads to shame. Scanning for what’s wrong instead of noticing what’s right. Expecting skills a child hasn’t learned yet. Punishing dysregulation instead of supporting regulation. An effective behavior system looks different. It drives motivation, not shame. It’s private, discrete, and protects dignity.

Graph Coloring Problem, one of the most important problems in graph theory and algorithm design.

NP reduction 3 coloring is NP complete: reduction from 3SAT