Thanks for the 40&8 explanation, that is a bit of history I did not know. Yes, I can see the parallel you have drawn between the 40&8 and IMAA.

The difference, I see, is the 40&8 recognized their ranks were decreasing and tried to do something about it. But, I am not sure the IMAA has realized it yet.

I might add that I am a member of the Vintage Radio Control Society (VRCS) and we had a cut off date of January 1, 1970. That has worked since the inception but the membership realized if that date was cast in stone the organization would eventually die. So, this year a vote was taken and the cutoff date is now a rolling date of 35 years from the current year. I might also note: this was changed even though the membership numbers were still increasing. That is due to leadership and the leaders listening to the members.