I was watching the Parallel worlds movie on Dr.Kaku's website and I got to thinking. Just because it is utterly impossible to pinpoint the positions of atomic particles doesnt mean they flicker into and out of other dimensions. They could just move very rapidly Making them just look like they flicker in and out of existence.Why is it thought that the particles flicker into different dimensions ? I was also wondering why the strings(in string theory) "evolved" into membranes,just because the 11th dimensions was added. Any thoughts?