Is There a Revolution in Soup Markets?

There has been a revolution in what is known as menu costs. In a supermarket, you've need to pay human beings to walk down the aisles and literally physically change the prices on everything. Now with these, like yink price displays, it's all as you just press a button and the price changes. And they do the prices in soupmarkes change sop frequently because the cost of changing the price has gone way, way down. Are people getting the price wrong more now because it's more confusing? Yes, yes, there's a paper about this.