>I assume that M-theory must refer to 'Many-Worlds' theory? [...] If not,
then what does "M-theory
>really kicked in" refer to? Also, "brane theory"?
Membrane theory. Extended strings. Ed Witten, the superstring genius, is
very hot for it. There are good sites on the Web but I can't find them
right now, sorry. Mitch has some links, as I recall:
http://www.thehub.com.au/~mitch/
Damien Broderick