>>12805489granted, these ideas of large extra dimensions were a product of their times (late 90s-early 00s) and they came from the D-brane thought mode of the time (another name is “brane worlds”). but the models, like ADD and RS, were not specifically stringy.
in fact, “branes” were only reluctantly accepted into string theory, and given that stupid name, because for years, string theorists hated on “membrane theorists”. membranes were a big field of research stemming from supergravity stuff. but string theorists hated all that because membranes were believed to be deficient compared to strings.
however the whole game changed in 1995 when Witten came up with M theory which united supergravity with string theory. in fact his original definition of M theory was “M stands for Magic, Mystery, or Membrane.” the guys who inspired witten on M theory were Hull and Townsend, both membrane theorists.
only later did string theorists convince Witten to change his tune to “Magic, Mystey, or Matrix” to cut out the membrane folks. and in M-theory they don’t call them membranes. they have the ridiculous name “M-brane”
