Superstring theory:: What it cannot do but E-infinity could

Superstring theory is by far the most popular mathematical theory for quantum gravity ever devised. It also has genuine successes in numerous respects and helped initiate and develop other theories. However, there are numerous short comings and some fundamental problems which superstring theory, as it stands today, cannot solve in a satisfactory way, In the present note we examine whether E-infinity theory could be drawn into complimenting superstring and Brane theory to reach a more satisfactory resolution of these outstanding problems. (c) 2005 Elsevier Ltd. All rights reserved.