Newton thought that being able to describe what something did was good enough and simply did not really care why it was. If his description works, who cares why it works, it does, right?
Theory vs Law...... This one has bothered me on RIU for a while, and I wanted to make a thread about it one day...... Laws and Theories are the same thing. Example, Newton's "Laws". Oops, they are revised, now called "Einstein's Theory". The only reason the word Law and Theory got changed is because of the simplicity of sciences origins. Newtons laws we're pretty easy to understand and understood as common sense. A theory, however, goes beyond our "senses" and has to have a mathematical background to be a theory. A theory is NOT someone who says "I think this works this way", it is someone who says "I think this works this way, and here's the math to prove it..."
So remember next time you here the Laws of blah blah and the Theory of blah blah, that the Laws are generally "common sense understandings of natural phenomenon" and Theories are "mathematical understandings of the complexities our senses cant naturally sense".