Strings and Branes, a Turnabout ??? When string theory came out, it was to add one dimension to the zero dimension of point-particles. Then it was realized that in order to make the theory consistent, six more dimensions must be added to space. Then M-theory needed one more space dimension. Brane theory proposed the existence of any number of dimensional branes. The 6-brane, 5-branes, 4-brane, 3-brane, 2-brane, 1-brane, and 0-brane. Doesn't it look like theory is now turning around going back to the zero dimension of points?