A Little As To The M-Theory Idea

Superstrings tend to exist in orbifolds.  Orbifolds tend to exist in orbifold eigensets.
E(8)XE(8) superstrings are the fabric that binds orbifolds into orbifold eigensets.
The reason that superstrings appear to exist as membranes that act in unison is because of a number of reasons.
1)  As said before, superstrings tend to exis in orbifolds, and orbifolds are the membrane-source of all substringular phenomena that act as a group besides superstrings And phenomena that are smaller than superstrings.

                
2)  Orbifolds tend to exist in orbifold eigensets, and, such eigensets exist in as a membrane-like phenomena as well.
                                         
3)  Superstrings that exist in any tense of superconformal invariance exist -- while these are in superconformal invariance -- in a general vibrational locus, when taken individually, so as to form via their corresponding Gliossi-Sherk-Olive ghosts, a pattern that represenst a membrane-based appearance.  If it wasn't for the existence of ghost anomalies, their would be no substance where as to form the dilatons and dilatinos that are necessary for the ensuing formation of gravitons and gravitinos.  Gravitons and gravitinos are the gravitational-type of superstrings that -- via the Ricci Action via the Rarita Structure -- allow for the existence of gravity.

4)  Orbifolds and orbifold eigensets that exist in any form of conformal invariance form a multiplicit array of Gliossi-Sherk-Olive membrane-based ghost patterns that bear activities that excentuate the existence of that phenomena that interconnect the orbifolds, and E(8)XE(8) superstrings are that phenomena that interconnect the orbifolds into orbifold eigensets so that phenomena that are significantly larger than superstrings may act together as a group in the form of normally detectable subatomic phenomena.

5)  The activity of E(8)XE(8) superstrings indirectly cause the motion of E(6)XE(6) strings in such a fashion so that these later mentioned hadrons may pluck the second-ordered light-cone-gauge eigenstates like a harp so that vibration eigenstates known of as Schwinger Indices may propagate along the Rarita Structure so that there may be a relationship between gravitational particles and discrete units of energy.  Without the prior implied Ricci Action taken multiplicitly throught space and time, gravity would not have a chance to be kinematic upon superstrings that are discrete units of energy.

6)  The exchange between Gliossi-Sherk-Olive ghost eigenstates and other ghost eigenstates that are on the Real Reimmanian Plane eigenconiaxials where superstrings and their corresponding Fadeev-Popov ghosts With the Neilson-Kollosh ghosts that exist in the regions where the gravitational particles work via the Ricci Action eigenstates so as to allow for what would appear as a membranal interchange -- while certain ghost anomalies are perturbated into positive and negative norm-states -- that makes it appear that the basic "substance" that forms subatomic phenomena is to be membranal phenomena.  Yet, if it wasn't for the existence of superstrings, orbifolds would have no internal-based function, and, orbifold eigenstates would have no internal-based function.