The apparent difference between them earlier on is simply due to the chaotic nature of the system (i.e. the different «weather» in each simulation). (realclimate.org)
This direct deposit nature of the system means there's much less risk associated with collecting payments. (greenresidential.com)
The books, by nature of the system, were always out of date, but we had daily sheets to keep us current. (remonline.com)