Anyone who'd read even an introductory economics text would know that such laws are defined "ceteris paribus", meaning all other things being equal. Like in phy

Anyone who'd read even an introductory economics text would know that such laws are defined "ceteris paribus", meaning all other things being equal. Like in physics: the fact that a law that assumes something is a perfect sphere doesn't work perfectly when something is not a perfect sphere doesn't disprove the law, it just shows that it alone isn't sufficient to model complex phenomena.