Rule of thumb

Clar's rule Koomey's law Nelson rules rule of three Naegele's rule Metcalfe's law Fleming's left-hand rule for motors "Yes, And" rule Moore's law Pareto principle octet rule De Wahl's rule Rule of 72 Chauvenet's criterion Swanson's law Rule of thirds rule of the moving square Chéron’s rule 1% rule 1:5:200 Andy and Bill's law Clark's rule Hückel's rule empirical statistical law Hy's law I before E except after C lead room Moscow Rules rule of thirds Rule of three rule of tincture two-second rule Niven's laws Benford's law 68–95–99.7 rule Lipinski's rule of five Huang's law