How to construct such a new physics theory? The idea is pretty simple. One starts from the Standard Model and extends it, for instance, by enlarging the symmetries behind it or its particle content. This generally allows one for curing some of the flaws of the Standard Model. Which flaws? Well, as an example among several others, the Standard Model does not provide any successful explanation for the dark matter pervading our universe.

Isn't that what has been tried for over a hundred years now, yet still hasn't brought us any closer to the "secret of the old one"?

How come main stream science still has no idea what gravity is? How come it still does not understand there is a relation between gravity and the electric field, as has been observed with the Biefeld-Brown effect?

If only we can invent yet another kind of "particle", virtual or not (who cares?), or some "mass" with which we can "extend" the obviously flawed model, I'm sure it will end different this time....

Yeah, right.

So, what is dark matter and why should it even exist?

Although dark matter has not been directly observed, its existence and properties are inferred from its gravitational effects such as the motions of visible matter, gravitational lensing, its influence on the universe's large-scale structure, and its effects in the cosmic microwave background.

In other words: there is a problem with the understanding of gravity in the standard model, because visible matter in the Universe refuses to adhere to the rules in the standard model.

Gee, who could have thought that when you model gravity as a fictitious force caused by curving space, that something might go wrong somewhere, despite Tesla's clear and direct warnings this fantastic idea has not, will not, and cannot work?

According to the relativists, space has a tendency to curvature owing to an inherent property or presence of celestial bodies. Granting a semblance of reality to this fantastic idea, it is still self-contradictory. Every action is accompanied by an equivalent reaction and the effects of the latter are directly opposite to those of the former. Supposing that the bodies act upon the surrounding space causing curvature of the same, it appears to my simple mind that the curved spaces must react on the bodies and, producing the opposite effects, straighten out the curves. Since action and reaction are coexistent, it follows that the supposed curvature of space is entirely impossible.

But even if it existed it would not explain the motions of the bodies as observed. Only the existence of a field of force can account for them and its assumption dispenses with space curvature. All literature on this subject is futile and destined to oblivion. So are also all attempts to explain the workings of the universe without recognizing the existence of the ether and the indispensable function it plays in the phenomena."

So, there you have it. Searching for dark matter is futile! It does not exist!

Besides, it can't be measured, is therefore untestable and thus the whole quest for dark matter is nothing but pseudoscientific crackpottery