Farming efficiency in a free farm lane

go for 100 cs at 10 minutes! Forgot to say this in video, but back when I started playing dota, 72 cs at minute 10 was perfect farm. Now in a completely free farm lane I think carries should be able to hit 100 cs at 10 minutes everygame (recent patch made 1 extra creep earlier this method of farming the side camp while killing all lane creeps)