Even wide-reaching theories in science are fairly narrow in their application...
Newton's law of gravity is often referred to as the
Universal law of gravity: it applies to the gravitational interaction between bacteria and sugar molecules as well as planets and galaxies. Quantum theory is believed to also be universal, even if its deviations from classical theories is too small to measure in large systems. A major thrust in physics now is to find a grand "Theory of Everything (TOE)". Intelligent design seems to be just one of those Theories of Everything.