decision tree for the <a href="https://en.wikipedia.org/wiki/Monty_Hall_problem" class="extiw" title="w:Monty Hall problem">Monty Hall problem</a>
<a href="//commons.wikimedia.org/wiki/User:Rick_Block" title="User:Rick Block">Rick Block</a>
<span class="int-own-work" lang="en">Own work</span>