Reading those posts by
Tom Martiniano above that were transferred from somewhere else.
Tom, I do't know when you got
into $cn, but I see you mention the post you were on in 1986.
You speak of "what boomed $cn" in the '70's. Ummm, you missed the correct data in your eval. Probably because it was not available to you, and certainly you have not cited the explicit what, whys and who's.
You also jumbled up some time . . .
The "Study Tech" was first introduced around 1964-5.
In August, 1969, Alan Walter had 1,000+ fully paid SHSBC course paid for on behalf of the staff and public of his several Missions . . . and this in the US alone. In 1967-8 I was producing 55 new names a week as PES for the London Day org and a further 25 per week for Fnd . . . this from properly utilizing and training FSMs and doing effective Intro lectures . . . the lectures were such that SHSBC students used to come up to London to sit in on them so they could take the handling of this successful action back to the US to use in Missions.
The release of OT3 is not the why of the "boom" . . . the why of it began earlier with effective individuals applying the tech and successfully interesting new public and giving the gains that were real to them . . . . that expansion (where ever it is referred to as occurring but is not stated by you) that was visible "in the '70's" was the result of effectively getting folks on lines at Missions and Div 6's in the '60's.
Ummm, anyone who thinks the expansion is the result of "OT3 being discovered and released" is rather imputing magical spiritual powers as the why
As to SO management "booming the Orgs" . . . don't kid yourself! I have seen and watched SO management do nothing but crash the stats of the Orgs . . . . for the record, since you may not know, I got on lines in 1957, and was one of the characters that set up the center in Sydney (in 1968) that became the Org . . . . so I have lived the history of this thing.
I can assure you that doing an analysis retroactively and only of the type of data you cite really does miss the real whats, whys, whos . . . .
RogerB