Plenty of blogs say climate science is not a science. Climate scientists say otherwise. Plenty of blogs say economics is not a science. Climate scientists say

Plenty of blogs say climate science is not a science. Climate scientists say otherwise. Plenty of blogs say economics is not a science. Climate scientists say otherwise. What exactly differentiates one statement from the other ? Aside from the fact that one is popular opinion and the other is not (although that's debatable and differs by person and by region).