RES IPSA LOQUITOR (The thing speaks for itself)
Wellie himself openly admitted having placed two numbers in that box.
Accordingly, showing the edge of no "0" was resorted to merely as a camouflage or front because the no. "2" was highly decipherable to the contestant. That to do otherwise, the contestant would just simply placed his/her bet on the box and completely ignore the bid.
What wellie did not know is that showing the edge of no. "0" by itself was an act of cheating. He made it appear to the contestant that the number may in fact be "0"; hence, uncertainty arose on the part of the contestant who had no other recourse but to take the money in exchange for the box which he could have won were it not for the tricky (or fraudulent) presentation.
Lastly, meron nang ganitong laro si willie in the past. lahat na numbers, whether 0,1, or 2 ay di mapupuna dahil sa design.
HE'S GUILTY!