Of all parts of the production process, with al being used to estimate any unknowns. and this will bring calculation times down from months to minutes. if you come in with your t—shirt, and say it was made of organic cotton that was produced in sri lanka, and we knew where it was produced, and we knew where it went to be actually manufactured, and where it went to be sold, that is enough for us to fill in the blanks. so it sounds like there is a little bit of guesswork, because if you don't know exactly how i have shipped my cotton from a to b, i could be doing it in a great way, or i could ...