The scientific method has long been used as a framework to understand the world.
This method of thinking has indeed helped many, in various sorts of areas. It starts with observation, then you spot something out, come up with a prediction which we call hypothesis. Then here comes the interesting part; one would design experiments to test the hypothesis. Sometimes, or shall I say if one is lucky, conclusions could be drawn straight away. But most of the time, we fail, modify the experiment or the hypothesis until we can finally draw conclusions.
However, this method has its flaws.
If one were to ask you 'How many meters does someone love you?' or 'Please give me ten kilograms of happiness.', you would find their requests slightly silly.
The world is constantly asking us to put a number next to everything and it is indeed tempting to quantify things around us. But certain rubrics might not be a true reflection of what you are measuring, especially if that something is somewhat unmeasurable.