The problem is raw brain power. If we were clever enough, we could solve M-theory and settle everything. Here's a glimpse of String Theory. Now that you've watched that one, here's another place to see some information. If you want to know about a test for string theory, try this one. Now, observations of the Saturn system, and observations of Jupiter's Trojan asteroids as well as recently discovered Trojan companions around the Earth, Mars, Neptune, and Saturnian moons, combined with models for elemental abundances in each body will test for composition-dependent violations of the universality of free fall in the solar system. They remain uniquely valuable for tests of string theory, because they're cheap and easy to replicate.
This guy is quick to repudiate any and all such claims. Dr. Strassler is a Physicist I respect, but in this one he's having a knee-jerk reaction. When he notes that the paper concerns testing Einstein's theory of gravity, he forgets to mention that the unification of quantum gravity and General Relativity is one of the primary driving forces in the exploration of String theory. And his remark,
- Even if a violation of the equivalence principle had been detected, or is detected in the future, it isn’t necessarily due to string theory. It might be due to some other modification of Einstein’s gravity — in fact, the authors consider one such modification in their paper!
I'm disappointed in his choice to say, " it isn't necessarily due to string theory" because that implies that it might be, and that makes him look as if he doesn't want it to be true. If that were actually the case, it would damage his reputation for objective honesty, and that would be sad. He's a fine scientist and has a clear and open mind about new possibilities.
Going forward, we should consider the possibility that I am Right. ( a sound concept, as I usually am). In actuality this would be something of a departure from the norm, as I tend to go off half-cocked as often as not. I think that the success of the EM drive, in spite of it being impossible, could be linked back to the validity of M-theory, because we don't yet know what it makes possible. Granted, there's still a strong possibility of experimental error, but it's going away without any change in results. This could lead to a workable Warp Drive, since the expansion of possibilities could open an entire new field of study. Insofar as those who say it doesn't work because we don't understand how it could, I can only point at the history of Science. Galileo was wrong, Newton was wrong, Einstein was wrong, and the number of 'wrong ideas' that came to be accepted science far outweigh and outnumber those accepted. The steady-state theory was accepted, and is probably wrong. Now we must realize that the EM drive is producing thrust, however it does it. If you can't find a hole in the experiment, and if you can't find anything wrong with the methodology, then you have to accept that it works, and go on to see why it can violate those precious "Laws" you've been using for so long. I know I will.
Perhaps that's a pipe dream, but it's a wonderful dream to contemplate. The expansion of humanity to other worlds would end the problem of having to depend on luck to keep us alive. We have to hope that a large object won't hit the planet, (even though one probably will) and that we can cope with climate change, (yes Virginia, there is climate change). If we can get successful colonies to exist, anywhere in all the universe, we've doubled our chances of survival.
I know that many are saying, right now, that we shouldn't move to another planet because we can't even treat this one right, but that's just saying that we need to improve. We've needed to improve ever since we started. If you want to use religion, the Bible reminds us that the first thing Adam's sons did was for one to kill the other, out of envy and jealousy. Humans just don't play well with others. Prejudice, bigotry, crime, violence and hatred seem to be a curse on our entire species. We must not allow this curse to end our existence. Even if we can't conquer it on Earth, perhaps being on another world will give us the incentive to see ourselves as a single species, dependant on one another for survival. At least we need to try.