I may be dumb here, but I can not make sense of this.<br>Percentage of what exactly?<br><br>Suppose I count apples, and keep a tally of % with worms.<br>Suppose I have counted plenty, and found a few percent with worms.<br>Now I count a one more, and it has a worm.<br>The % of bad apples CANNOT suddenly jump the way your graph does??????<br>I would have to have an awful lot of wormy apples to (gradually) climb to 50%.<br>Then I would have to have a long unbroken run of good ones to (gradually) reduce the fraction back down.<br>Confused,<br>Hugo<br><br>