[coldtea]

>embedding into higher dimension spaces (or in general - into more "richer" structures) is a convenient mathematical tool and it works nice ... in mathematics. To work in physics that higher dimension space must really exist.

I'd put my money on those Phds in physics knowing that already.

They probably heard about Occam too.

Building a model based on specific reading on the current knowledge of physics, intuitions that hold true in light of this knowledge, and some mathematical tools, is a valid process, despite not being immediately empirically checkable. The "exists" part can be tested later.

That doesn't make their work equal to abitrary BS like "a 4d nut that a small 4d squirrel puppy is about to bite into".