Reproducibility of observed reality. The most simplistic summary I can come up with. Manufacturing to baking to software to economic models all strive to be reproducible but with the so many variables there is no way to have a true constant.
People like constants, cookies always taste the same, video game does not have glitches, car manufacturer always produces a fully fictional vehicle right from the plant. Yet some cars a lemons, cookies burn, quality of ingredients change with the seasons, software crashes.
Science is complex while most people just want to have a reduced cognitive load. Spend no time actually thinking about the complexity but accepting a more simplistic story. Since science can in no way offer a true yes or no people look else where, even when the simplistic reasoning is wrong.
A chief can say baking is easy but knowing which ingredients, when to mix, and how to use the tools is even too complex for a lot of people. Walk into a grocery store of how many different types of microwavable meals exist because it is easier to place something in to a rectangular enclosure for 10 minutes and press 5 buttons.
Only thing I've come to is to remind others is our world is complex and requires complex understanding, aka specialist, but often simplified where doing is easier. You might work on a manufacturing line, bake, or even play games but does not mean you know the science behind those processes. You may think there is no science behind baking until you ask questions, such as how does one build an electric oven? That is all I've come to, reminding people that everything is more complex than what it appears to be.
Everyone is limited by models, and scientists certainly are too. If you've ever taken a physics class and drawn a free body diagram, you've made a model. It's a good first order approximation, and an excellent pedagogical tool, but it's also a model that is limited in many ways. Is it too limited? Depends on what you want to do with it.
No. You misunderstand what science is. Science is the process of attempting to falsify a model that is already built.
Modeling in itself is not science. It is the verification of the accuracy of that model that is science and there is even a huge flaw in this science.
The keyword is falsify. Nothing in science and therefore in reality as we know it can be proven to be true.
When a scientist engages in the scientific method, no scientist has ever proved any claim ever made by humanity to be true. They are simply attempting to falsify a claim. Truth remains forever dubious for eternity.
We can only say that a theory is probably true because all our attempts to falsify the theory have failed.
precisely because it merely builds models.