That said, ID does not qualify as science because it gives us nothing to test or measure. Science requires replicable tests involving measurable variables.

In this remark, Snow draws a boundary between scientific inquiry and claims he regards as non-scientific. He argues that for an idea to count as science it must generate testable hypotheses—procedures that can be repeated by others and that rely on measurable variables. By saying intelligent design (ID) “gives us nothing to test or measure,” he implies it functions more as a philosophical or theological assertion than as an empirical research program. The significance is rhetorical as well as methodological: it frames the legitimacy of ID not by its conclusions but by whether it participates in the norms of modern experimental and observational science (replicability, measurement, and falsifiability).