Contrary to what professional economists will typically tell you, economics is not a science. All economic theories have underlying political and ethical assumptions, which make it impossible to prove them right or wrong in the way we can with theories in physics or chemistry.
It is entirely possible for people who are not professional economists to have sound judgments on economic issues, based on some knowledge of key economic theories and appreciation of the political and ethical assumptions underlying various theories. Very often, the judgments by ordinary citizens may be better than those by professional economists, being more rooted in reality and less narrowly focused.
Indeed, willingness to challenge professional economists and other experts is a foundation stone of democracy. If all we have to do is to listen to the experts, what is the point of having democracy?
– Ha-Joon Chang, Economics is too important to be left to the experts