A new study in JAMA Ophthalmology considers whether eyeglasses confer protection from COVID-19. What it really demonstrates is how a variable -- in this case, eyeglasses -- can point in so many directions as to be useless. (But it will get you published in a peer-reviewed journal.)
Isn't it odd that Florida has so many people living with Alzheimer's? If Erin Brockovich was investigating the case, she probably would conclude that it's something to do with the water.