Because large energies imply large masses, this pointlike nature of quanta at high energies implies infinities that ruin the theory. The string hypothesis avoids this high-energy pointlike structure by assuming that all quanta are strings. A string is a quantum that, on being squeezed at the highest energies into its smallest configuration, reduces to a one-dimensional loop, like a rubber band, rather than to a point. A loop configuration spreads the quantum out in just the way needed to prevent the infinities. This idea might lead to the perfect unification: All fundamental quanta might be
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