Abac or Erbac? What's the Difference?

i remember a pane at one of the last d imparts on gardenersi am before the disaster hit. And i remember that tepanv was someone from micasop, someone from aw s and some one from gugo. Basically they were saying something like crazy number, like 90 % of the rolls defined were actually never used at ranton. With ourback, you get roll explosion as well. To be able to cater to all the new sconarios, you have to invent new rolls. Those rolls eventually either get used in and forgotten and then dropped, or never get used.