n0mesorah,
“I don’t understand how you reconcile Rav Moshe writing to the Rabbanim in Flatbush (1978) that it is all printed at length in every detail in the first volume of Iggres Moshe, with your opinion that Rav Moshe only came up with the three million number in this teshuva and then reworked a year later?”
Show me where Rav Moshe wrote in chelek aleph anything about the numbers which he required. They do not exist. Rav Moshe is referring to that he formulated his shita regarding shishim ribo being conditional of 12 mil by 12 mil. However, the actual number of people residing in the area that it would require to have 600,000 people traversing the streets at one time, he did not express in this teshuvah (since it was not nogeia for Manhattan). Rav Moshe originally wanted to argue that 600,000 people residing would be enough. In 4:87 he clearly makes this suggestion, and then argues that the minhag was not as such. Hence, how can one say that Rav Moshe did not add to his shitos later on, regarding Brooklyn? I do not have to explain these words of Rav Moshe when in fact his shita evolved over time. To deny that Rav Moshe’s number is three million is denying the entire Igros Moshe O.C. 4:87-88, 5:28-29.
“And all those who spoke in learning with Rav Moshe, testify that even to his last days he said his shita is like it is published in chelek aleph.”
I don’t care what people say they never learnt his teshuvos.