hmm what exactly are they about?

hmm, i see now. well this is actually very cool. danke for the link :)

It was my understanding that they have begun to solve a lot of the issues with string theory by combining the existing string theories to create the new M-theory. The formula for M-theory combined all the remaining string theories and thus creating a total of 11 dimensions. Without M Theory string theory really doesn’t make sense because you have 6 different theories that are trying to explain the same thing.

I enjoyed this video immensly, however, one criticism I have of it, is it treats Heisenberg's indeterminancy principle pseudo scientifically.

It says it is the same as the observer effect, which is a gross misstatement. Furthermore, not only is it not the observer effect, but they mistate the observer effect. the point of the observer effect is not that some mystical force changes the actions of particles, rather, that observing an object effects it. For example, measuring the position of a particle requires that you add electrons to it, partly in the form of light. This, in turn, speeds the particles up by adding energy to it, and prevents an objective measuring of the speed.

Furthermore, in particle-wave duality, to speak of the speed of the wave-particle, is to speak of the frequency of its repetitions, and thus, the speed of the wave. The speed of the individual particle, behaving as a quantum particle, is indeterminant, as quantum particles do not even travel in straight lines from Point A to Point B, as one would expect. So while you can tell the specific position of the particle, the speed is indeterminate, and based on the wave. On the other hand, you cannot tell the position of the wave, as a wave is merely a representation of a particle over time. This movement overtime gives you the speed of the wave over time, but not the individual spee dof the particle. To observe speed or position requires that you take independent, individual measurements, and thus cannot be done at the same time, due to the fact that the observer effect would bias either one.

Einstein claimed that it would be possible to bypass the observer effect and indeterminancy principle if you had perfect measurement devices, and knowledge of all the variables. Other physicists, claimed that there was an element of randomnity that could never be predicted, even with all the data. I personally agree with Einstein, but we will never have perfect information, so the point is meaningless.