I brought this up in maths class once. The teacher agreed that the edge was a possibility and since he was involved in football, they used to flip the coin and let it land on the ground. More than once it stuck in the mud in the edge.
Then told us to ignore that possibility.
There was a wine company once that hired a new CEO and tied their bonus to how many more litres of wine he could move.
He cut the selling price in half (below cost) and walked away with a big bonus.