Only the hard sciences seem to have any real legitimacy and even then I wouldn't trust a biologist all that much.
I got started in life as an Engineer (3rd or 4th generation, as far as I can tell), and became a Biologist. One of the first things that shocked me is the notion of noise. In Electrical Engineering, noise is well-managed and understood. When you say you have a good fit to your data, it means errors of less than 1%. In Biology, there's so much noise and inherent variability that when you say you have a good fit, it means errors of less than 50%.
There are very few biological processes we understand well enough to say that we really, deeply understand them. Unlike, say, a transistor.