As I've said before:
Science is NOT done by consensus, but good science can be expected to generate a consensus.
This is pretty simple to understand unless you're a complete moron. It says that no one goes with a popular vote on how something is in science. But an hypothesis in science that is proven time and again and independent researchers keep arriving at the same point that they generate a consensus.
Take the Second Law of Thermodynamics. That's the one that people like you learn about the hard way when you buy "perpetual motion machines" from ads. The scientists know that the Second Law of Thermo pretty much proves that no such thing can exist. It's a general consensus.