On Monday, July 23, 2012 2:37:23 AM UTC-5, Szczepan Bialek wrote:
The Giants discovered in XIX century that light is the oscillatory flow of
electrons.

But that has since been proved not to be a fact, i.e. their theory has been disproved. Just as Issac Newton's discoveries were a little off, so were the "Giants" about which you speak. In RF conductors, electrons do oscillate but they are much too slow to "flow". I can crawl on my knees faster than electrons flow in a wire and that has been proved by actual measurements. The RF fields/waves that are flowing around a conductor at the speed of light are photons like the ones you are using to read this screen, just at a different frequency. When you realize what is the nature of the thing that is incident upon your retina, you will understand EM radiation.

But there are plenty of theories. Which one is the best?

The one that agrees with the latest experimental measurements. Einstein's theory that gravity curves space was just a theory until proved valid by actual experimental measurements. The CERN Large Hadron Collider is providing actual experimental measurements as we speak. If the measurements disagree with the Standard Model, we will have to change the Standard Model.

To have knowledge means know the facts not theories.

We will probably never know all the "facts" - the best we can do is become less ignorant. All of our models of reality exist in human minds filtered through human senses none of which are perfect. For instance, entangled particles seem to violate the spirit of the speed of light limit, yet they have been proved to exist by experiments. And how is it possible for a huge carbon Buckyball to pass through two slots at the same time and interfere with itself on the other side? Seems to me that the particle is creating a wavefront in the structure of space.

The best models are the ones that best match the latest experimental evidence. Some of yours do not match the latest experimental evidence at all, i.e.. seems that you are deliberately choosing to remain ignorant (or just pulling our legs).
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73, Cecil, w5dxp.com