MisterPeabody I didn't meant to sound like I'm criticizing you, it was more like "don't worry be happy".
I would suggest studying this
http://en.wikipedia.org/wiki/PID_con...troller_theory
In simple terms life, with everything involved (sales, sex, chick, booze etc) is not a linear function and in fact has a lot of oscillations... or like Heisenberg said it here
http://en.wikipedia.org/wiki/Uncertainty_principle , you can never determine two arbitrary variables with maximum precision ... you either determine one or the other ... you know you have the content but you don't know exactly if sales will come...
No sales in 12 hours may mean that you'll have 24 sales in the next two hours...
(have drank a couple of glasses of wine :D )