The 2002 discovery of the "Amati Relation" of GRB spectra created thepossibility that this and other correlations of GRB phenomenology might be usedto make GRBs into standard candles. One recurring apparent difficulty with thisprogram has been that some of the primary observational quantities to be fit as"data" - the isotropic-equivalent prompt energy $E_{iso}$ and thecollimation-corrected "total" prompt energy energy $E_{\gamma}$ - depend fortheir construction on the very cosmological models that they are supposed tohelp constrain. This is the so-called "circularity problem" of standard candleGRBs. This paper is intended to point out that the circularity problem is notin fact a problem at all, except to the extent that it amounts to aself-inflicted wound. It arises essentially because of an unfortunate choice ofdata variables, such as $E_{iso}$, which are unnecessarily model-dependent. If,instead, the empirical correlations of GRB phenomenology which are formulatedin source-variables are {\it mapped to the primitive observational variables}(such as fluence) and compared to the observations in that space, then allcircularity disappears. I also indicate here a set of procedures for encodinghigh-dimensional empirical correlations in a "Gaussian Tube" smeared model thatincludes both the correlation and its intrinsic scatter, and how thatsource-variable model may easily be mapped to the space of primitiveobservables and fashioned into a likelihood. I discuss the projections of suchGaussian tubes into sub-spaces, which may be used to incorporate data from GRBevents that may lack some element of the data (for example, GRBs withoutascertained jet-break times). In this way, a large set of inhomogeneouslyobserved GRBs may be assimilated into a single analysis, so long as eachpossesses at least two correlated data attributes.
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