Ooh, ooh, may I try? =)
From what I've come to understand, a Perpetual Harvest may be achieved by having a dedicated Veg area (24/0 or 18/6 for argument's sake) and a Flowering area (12/12).
Both rooms are constants, the light cycles never changing. If and when you determine a clone/cutting/seedling/growth is ready, you physically move it over into your 12/12 area.
In this Flowering area, only the light cycle is constant, as you are bringing in and removing each plant based on it's own individual growth.
In sum and theory, if you have a single mother, every cut you take from that mother will grow at the same rate. If you removed a Vegging clone on the 1st of the month, and it takes exactly 60 days, then loosely translated, you will have a fully flowered girl ready for harvest on the 1st of the month, two months later.
So if I place a Veg'd cut into the Flower room on the 1st and 15th of every month for two months, then I would have four blooming ladies in my Flower room, each separated by two weeks of growth? If each stays to the 60 day bloom schedule, then every two weeks, I should be able to cut down and harvest in the same order that I placed them in to flower? How close am I to understanding what I read on Google?