%0 Journal Article %T A Specimen of Theory Construction from Quantum Gravity %A Rafael D. Sorkin %J Physics %D 1995 %I arXiv %X I describe the history of my attempts to arrive at a discrete substratum underlying the spacetime manifold, culminating in the hypothesis that the basic structure has the form of a partial-order (i.e. that it is a causal set). %U http://arxiv.org/abs/gr-qc/9511063v1