RF Safe argues that “no effect” (null) findings in RF research should be treated as informative constraints rather than dismissed, within its S4–Mito–Spin mechanistic framework. The post claims biological and exposure heterogeneity can produce nonlinear, tissue- and signal-dependent outcomes, making null results an expected pattern under many study conditions. It references a WHO-commissioned systematic review on RF-EMF and oxidative stress biomarkers as concluding the evidence is of “very low certainty,” citing bias, heterogeneity, and exposure/measurement limitations.