Abstract: A distinctive estimating method using a concise depiction, organization, and presentation of time, related to the number of items accomplished, to produce a Historical Data Block of information, that is a stable inference base. These Blocks of information can be stored, referenced, anatomized, multiplied or divided and restacked, to create other accurate totals and estimates. This stable Block easily allows the accurate calculation of future duration times and item quantity totals. The calculated item quantities can be used to calculate current item costs and totals, by using a current item cost database. Or the item totals can be printed and sent out, requesting a quote, or sent out as purchase orders. The accurate duration times can be used to automatically produce a schedule, concurrently with the estimate, by using a predefined templet.