Abstract
I quantify quality / complexity, today when, besides, a high quality is demanded on the short appointed date of delivery of system development, and I am visible, and I measure the progress degree, and that I control quality is done with importance by doing it. There is reliability learning curve in one of the classic technique. Schematization did the obstacle number and the test number, the problem number and relations with time mainly, but lectures about the pit that I am apt to overlook at the time of an application of this curve. By this report, I mention Rayleigh-Model which is this pit, an improvement method.
