While we try to make things accessible to the public, the determination of what is "good" is ultimately made by experts.

"The public" has a level of science literacy that is somewhat medieval (as in pre-Newtonian, and increasingly pre-germ theory), and while it's important to maintain political support, it's not reasonable to expect Joe Schmoe to be able to track the latest experimental results from CERN.

In fact, it's not reasonable to expect a very smart lay person to do the same. The problem is basically that the information that gets encoded in papers and public datasets is not spanning! There's a shocking amount of fiddly details that don't get transmitted for one reason or another. Say what you want about how things "should" be done, but that's how they are done. If you want things done differently you can encourage that behavior by rubbing cash on the problem.

> While we try to make things accessible to the public, the determination of what is "good" is ultimately made by experts.

No, it isn't. It's determined by whether the models make accurate predictions. The fact that in our society, science is viewed as an authority, where Scientists can pontificate as "experts" without having to back up their claims with a predictive track record, is a bug, not a feature.

> "The public" has a level of science literacy that is somewhat medieval

The public doesn't care about "science literacy" in terms of understanding the models. Nor does the public have to. If the models make good predictions, that will be obvious to the public if it's something the public cares about.

A good example is GPS. "The public" has no clue how GPS actually works, and doesn't understand all the nuances that had to be carefully considered in order to get it to work as accurately and reliably as it does. Building and maintaining the system requires experts, yes. But knowing that GPS works is simple: does your smartphone show you where you are accurately? The fact that it does is strong evidence that GPS works, since GPS is what your smartphone uses to do that. (Yes, I know there are other things involved as well, like your smartphone having access to accurate maps. Your smartphone being able to tell you accurately where you are is also strong evidence that the people who produced those maps were doing it right.) And "the public" can make this simple observation without having to know anything about the details of how GPS does what it does.

> it's not reasonable to expect Joe Schmoe to be able to track the latest experimental results from CERN.

Nor does Joe Schmoe have to. Joe Schmoe doesn't care. The cutting edge physics experiments being done at CERN have no practical impact on anything in anyone's daily life, unless you're one of the people who has to analyze the data.

But if you come and tell Joe Schmoe that hey, this new discovery they just made at CERN means everyone has to suddenly turn their entire lives upside down, then Joe Schmoe is going to want to see the predictive track record that backs that up. And it better be a strong track record, of predictions that affect people's daily lives, not just what tracks are going to be observed in CERN's detectors.

Here's another example: prediction of possible impacts on Earth by comets and asteroids. Astronomers have an extensive track record of being able to predict, years in advance, the trajectories of such objects, with an accuracy much smaller than one Earth radius--i.e., accurately enough to be able to distinguish an actual impact from a close approach. So if astronomers ever come out in public and say, we're tracking this comet and it's going to hit the Earth 29 years, 3 months, and 7 days from now, and here's the region where it's going to hit, and we'd better start planning to either alter its trajectory or set ourselves up to withstand the hit, yes, they can make that claim credibly because of their track record. But most public claims by scientists, even "experts", don't achieve that high bar--and that means the public is perfectly justified in just ignoring them.