I like the approach described in this article, which is, in fact, "Take some time to look around and then choose." Choose too soon -- you don't have a relevant

I like the approach described in this article, which is, in fact, "Take some time to look around and then choose." Choose too soon -- you don't have a relevant criterion. Wait too long -- you might have already missed the best units. I wonder if there is an insight into the actual model behind the resulting change_mode_number = total/euler_number formula?