The large scale velocity field was sampled recently by two independent
methods: the supernovae type Ia light curve shapes (Riess, Press \& Kirshner)
and the Abell Cluster Catalog brightest cluster galaxy metric luminosity (Lauer
\& Postman). The results of these investigations seem to be contradictory. I
present an analysis of these samples, compare them and investigate whether
standard structure formation models and other deep surveys are compatible with
them. I also make suggestions as to how to improve the samples so we can
actually resolve the bulk flow vectors. I show that although these two samples
seem to cover the same volume, their window functions are sufficiently
different so that they are only weakly correlated. Further, since both samples
are sparse, they are noise dominated and in order to improve the signal to
noise they need to either increase their sample size (RPK) or decrease the
measurement errors (LP) significantly.Comment: 8 pages, 3 figures included in a self-unpacking uudecoded gzipped
tarred postscript file. A lecture presented in the ASP conference on
"Clusters, Lensing and the Future of the Universe". College Park, MD, June
26--28, 1995, Ed. V. Trimble (ASP Conference Series). The tarred file is
available at http://pupgga.princeton.edu/disk20/anonymous/feldman/ASP.ta
