Why work-in-progress aka inventory matters
. Return on Investment profit / investment improving ROI profit ++ / investment – [example: retail] more value (profit ++) sell more to the same customer get more customers increase prices (without losing sales) less waste (investment –) cheaper space / furniture / tills / … fewer people less inventory (things on the shelves and in the back) improving ROI improving profit / investment [example: software] more value (profit ++)...