That datum, Outflow=Inflow was never in a Policy letter. It's origin is unknown but Ron never wrote it
Are you still in the Mormon church now?
Here it is from the Admin Dictionary...however, most definitions have an attendant PL or bulletin or lecture, etc. Some don't have that and this one doesn't have it.
EQUILIBRIUM, a balancing point where
outflow is equal to inflow such as where a
nation's total expenditure equals its total
income.
That's not in the spirit of the datum but the following in regards to promotion is closer to the idea...the "outflow=inflow" doesn't exist here, though.
PROMOTION, 1. means, to make something
known and thought well of. In our
activities it means to send something out
that will cause people to respond either in
person or by their written order or reply to
the end of applying Scn service to or
through the person or selling Scn commodities,
all to the benefit of the person and the
solvency of the org. (HCO PL 20 Nov 65R)
2. promotion is making things known. It's
getting things out. It's getting one's self
known. It's getting one's products out. (SH
Spec 62, 6505C25) 3. promotion consists of
getting names and addresses and contacting
them and offering service to get them in.
The more names, the more contacts, the more
people. (HCO PL 15 Mar 65 I) 4. accumulation
of the identities of persons. This is
done by getting lists of names, by personal
contact, etc., and offering those identities
something they will buy, a book or a service.
Dissemination and salesmanship are really
promotion. (HCO PL 21 Jan 65) 5. when
routing arrangements are made or communication
invited from org to public and public
to org, we call it promotion. (HCO PL 17
Nov 64) 6. promotion is the art of offering
what will be responded to. (HCO PL 7 Mar
64) 7. promotion consists only of what to
offer and how to offer it, that will be
responded to. That's the extent of it. (HCO
PL 7 Mar 64) 8. by promotion in a Scn organization,
we mean reach the public. (HCO
PL 26 Aug 59) 9. poor promotion gives you
a ratio of maybe 98% outflow and 2%
inflow, i.e. 98 pieces of mail (of all kinds)
mailed and 2 pieces of mail (of all kinds)
received. Fair promotion would perhaps
consist of 90% outflow and 10% inflow,
meaning that for 90 pieces of material (of all
kinds) mailed by the org, 10 pieces of mail
(of all kinds) were received. Fantastically
wonderful promotion would consist of 50%
outflow, 50% inflow. A miracle would be
10% outflow and 90% inflow. No exact index
or chart of this has ever been made. But
the above is an educated guestimate. The
figures are given to make the following
point: the better the promotion, the higher
the inflow rises in proportion to the outflow.
(HCO PL 7 Mar 64)