[ctdonath2]

A mildly interesting notion, certainly one of the better crackpot theories I’ve seen.
If it’s that simple (and correct), then it would have been adopted & proven long ago. That it hasn’t, vs the enormous effort going into such strained concepts as String Theory and Dark Matter, is a good Occam’s Razor indication that it’s not true.
That he’s explaining the basic concept of vectors in Chapter 4 (of 11) indicates we’re not dealing with a particularly sophisticated author nor a sophisticated intended audience.
It’s an interesting notion, but seems an extended pursuit would fail to produce seriously useful results.

[misanthrope]

Certainly one of the more interesting deployments of Occam's Razor I've seen.

Electric Universe theory explains most, if not all, of cosmological phenomina observed without the use of undetectable and unprovable contrivances (black holes, dark energy, dark matter, etc).

Electric Universe theory will also explain many terrestrial and extra-terrestrial geological phenomena.

Electromagnetic forces are many orders of magnitude more powerful than gravity, and do explain what we see quite nicely.

Spend a little more time with it before you dismiss it as "crackpot".