The inventory chart at the top of the article is a bit misleading. It'd be better to use a months supply of inventory chart. A 100% increase in inventory is equivalent to a -50% decrease in inventory, but they show up out of proportion. It's much easier to increase inventory by 100% if the months of supply is very very low. (e.g. going from 1 month of inventory to 2 months of inventory is a lot less substantial than 2 months to 4 months)