pistils forming from a single calyx at the node isn't the same as calyxs stacking to form flowers is it? Thats why its called pre flower and not flower. Its a sign of sexual maturity like puberty is.I have strains that will show sex before flip, and just keep right on vegging until the flip, so how's that supposed to work? You start counting it as flowering while you're still in veg mode, just because you see pistols? Science is based on consistent facts. The only thing that can be consistent here (especially in large gardens where you can't check all plants for the first pistol) is when you change the light timing schedule. I think you may be confusing biology and horticulture.
Biology is the natural science that studies life and living organisms, including their physical structure, chemical processes, molecular interactions, physiological mechanisms, development and evolution.
Horticulture is the art or practice of garden cultivation and management.
That being said does it matter when you start counting anyways? Whats the point of counting in the first place, the plants aren't on your schedule.
Believing breeders flowering times and yield estimates are like believing a box of Kraft mac & cheese actually makes four servings. Its all marketing BS.