Today was a low research day; it got cut short. But Eilers made progress on the semi-supervised GPLVM model we have been working on. One thing we have been batting around is scope for this paper. Scope is challenging, because the GPLVM is not going to be high performance for big problems. Today we conceived a scope that is a purely geometric spectroscopic parallax method. That is, a spectroscopic parallax method (inferring distances from spectra) that makes no use of stellar physical models whatsoever, not even in training!