A few weeks ago, at about 6 a.m. on a weekend (which is always when these things seem to happen), our hot water suddenly started coming out boiling and the hot water heater began smoking and emitting a weird plastic smell.

We shut off the power to it, called the plumbing version of 911 and got a guy out here in a couple hours. After a thorough examination, he gave an explanation heavy on technical terms. It boiled down to: he could jury-rig a temporary fix but ultimately, he advised us that we would have to replace the hot water heater.

Now, imagine if I hadn’t listened to him; imagine I had either never called him in the first place or I rejected his advice by accusing him of being in the pocket of Big Hot Water, telling him “I don’t believe in replacing hot water heaters,” or “I’ve known this hot water heater a lot longer than you have and it doesn’t need replacing,” or “I’ll fix it myself with crystals and an organic diet.”

Most people would think I was a little crazy, or at the very least making a bad decision. Heck, even if I’d said I’d fix it myself with a toolbox and a YouTube tutorial most people would recognize that’s a bad idea.

Same thing with my car, right? When it’s check engine light comes on, I don’t try to diagnose it myself. If it makes a weird knocking sound I don’t say it’s just bad vibes and tell my mechanic I know more than him. I don’t put olive oil in it. I don’t say I don’t believe in rotating the tires. I don’t claim that because I have more experience driving my car than anyone at a garage, that means I’m the expert.

And yet — if my son’s doctor, an expert in child wellness, recommended a series of vaccines and I said “Sorry, I don’t believe in those and I know my child better than you do,” a lot of people would agree with my choice and probably say something like “You go, mama!”

Most people wouldn’t say they know their pipes better than a plumber or that they don’t need an electrician to rewire their breaker box (or whatever it is that you do with breaker boxes). But lots of folks are quite willing to argue against doctors, teachers, and even lawyers (God help you if you do this) in their particular fields of expertise.

There have been a lot of opinion pieces written about “the death of expertise” and how the internet, among other factors, flattened all forms of information so that anyone can seem like an expert and opinions are treated the same as facts. But I find myself noticing that it’s not really all forms of expertise that get called into doubt. It’s white-collar expertise.

Blue-collar expertise is still respected. People who practice those trades might not be respected at times — certain jobs are still unfortunately looked down upon in our society, especially by the well-off — but most of us wouldn’t be confident getting behind the wheel of an 18-wheeler without training. On the other hand, people always seem to think they can do a teacher’s jobs better than they can.

I’m not sure exactly why some expertise is valued and others doubted, but I have a few guesses. One is familiarity with the subject matter. Most people aren’t plumbers but most people use toilets and have dealt with some sort of waterworks malfunction in their life. So the average person has a general grasp of what a plumber does.

On the other hand, most people won’t ever set foot in an immunology research lab. If you don’t have a frame of reference, it’s hard to understand those who do, and easier to dismiss them. Of course, there’s the political angle. For years now, it’s been a project of mostly (but not entirely) right wing groups to devalue and sow doubt about certain kinds of experts for political benefits.

You see this a lot with climate experts; the overwhelming majority of them agree that man-made climate change is real and a serious problem, but it’s still treated as subject up for debate by our elected representatives and the media. Speaking of media: they add to the problem. The urge to present “both sides” of an issue. This is generally a good urge, and often fair; but unfortunately not every issue has two equal sides.

To use the example of my water heater: imagine a news show debate with the technician on one side saying “it’s broken” and me on the other side saying “no it’s not.” Wouldn’t make sense, would it?

Finally, there’s the gender angle. No, don’t laugh at me, I went to a super lib women’s college, I’m going to find a gender angle for everything!

For decades now, more women than men in America have gone to college and attained not only more bachelor’s degrees than men but more master’s and doctoral degrees as well. It’s a documented phenomenon that when women outnumber men in a given career field, wages and prestige drop.

Why wouldn’t the same thing apply to education, and educated individuals in general? If college educated experts are more likely to be female, why wouldn’t our society take them less seriously?