Stupid Science Tricks
I'll warn you right now, this is likely to be a series, because there are a lot of stupid science tricks to talk about.
What, you may ask, is a stupid science trick? It's when someone is using the façade of Science to pass off something that is, well, less than science. Of course, that means we need to talk about what "science" really is, and that can be a little bit tricky, because there's no one who can finally define it. It's not a thing, it's a system of beliefs, and as with other belief systems, it can be a little hard to define. (Consider, for example, the arguments over what constitutes a good Christian.)
Still, there are some common characteristics we can identify. Science is an attempt to understand and explain the world based on some assumptions: that there is a real world outside of ourselves; that this real world can be understood and explained; and that those explanations are true for everyone, so they can be tested and confirmed, or fail the test and be discarded.
We've built up a bunch of social processes around these assumptions, something I've called the "social contract of science", that establish some basic rules: when you are doing science, you publish your results so that others can see them and criticize them, and you make this easier by including in the publication full details of your methods, and by keeping your data and making it available to others.
Like other social processes, real-world science isn't being done by saints, and the social processes can be messy, but over time science has proven to be self-correcting. Sometimes, especially as people get grants and build up reputations in the scientific world, that self-correction can be a little slow. Add in politics, and the self-correction can be even slower, the stakes for refutation higher, and the discussions can get just a little bit ugly.