Morning, mate. Today's business lesson is on a concept called opportunity cost. Basically, it's the price of what you give up when you make a choice. Think about it on site. If you put your best form worker on sweeping the deck, the cost isn't just as hourly rate, it's the high value work is not getting done. In business, every time you choose to do one thing, you're actively choosing not to do something else. Opportunity cost is measuring what you lost by not doing that other thing.