#physic #science # [[Epistemic status]] #shower-thought # String theory >Well, according to the most popular string-theory models, it's only the apparent dimensionality that varies: the true space always has nine dimensions, but we don't notice six of them because they're microscopically curled up in the spirit of the cyl inder from Figure 2.7: if you travel a tiny distance along one of these six hidden dimensions, you find yourself back where you started. Suppos edly, all nine dimensions started out curled up, and then in our patch of space, inflation stretched three of them out to astronomical size while leaving six of them tiny and invisible. Elsewhere in the Level II multi verse, inflation stretched out different numbers of dimensions, creating worlds that seem anywhere from zero-dimensional to nine-dimensional. >~ [[Max Tegmark]] # External links