Empirical finding of authors (Famma, Shiller, Hansen and others), allow us to infer the organic disorder growth of financial theory. The disorder leads to non homogeneous expectations, that translate in the existence of an observed capital markets, where trade is possible (efficient market).
When you search the meaning of science, there is an interesting finding: it requires a systematic organize body of knowledge (Oxford Dictionary). Something that you don't find in economic "science".

Paradigms support theory and also leads crowd behavior. If paradigms change to often, then you are not dealing with a science, your are dealing with believes.
(Mauricio Bedoya).