> In science, you go out of your way to control for confounding factors.

There's tons of observational science done in a very similar fashion to the article where there is simply no way to control for confounding factors for the same reason that there is simply no way to properly control for it in the data available.

It’s a good start and even if error bars are wide enough to land a 747 in them their numbers show orders of magnitude scale differences. This should raise eyebrows at the very least in the biggest skeptics.

Going out of your way would involve committing unethical experiments, which is absolutely frowned upon by scientists.

And many experiments are simply impossible to do in a manner that completely removed every outside factors. But that doesn't mean that an experiment's results are immediately bad.

Having been close to someone who went through the PhD process to a career in research, this is a sadly common but romantic and incorrect view of science as practiced in the world today.

I'm the first one to be annoyed when political scientists and economists pretend to do science when they are just extrapolating from anecdotal correlations, but here this isn't something being published in a scientific journal and nobody claim they are doing “science” in the first place.