Can we fit all of the data?
W. Bialek, T. Gregor, D.W. Tank, E.F. Wieschaus, Cell 132, 17-18 (2008).
No abstract. (This paper is a Response to this Correspondence.)
PDF.
For more commentary and noise on this, Thomas at MSB wrote a nice post on Seven Stones entitled “Morphogen Paradoxes“.