<p>One thing to keep in mind is that, even after the bulk of the decisions are made, horse trading between the adcoms continues right up until the last moment. People keep getting pulled off and put on the admit pile right up until the letters get sealed and mailed (or e-mailed).</p>
<p>Imagine having your acceptance letter all typed and signed and sitting there with your name at the top waiting to be mailed, and with 30 minutes to go before they are sealed and mailed it gets pulled and redone into a reject or deferral letter. It happens all the time.</p>
<p>Now for a happier thought, imagine it the other way around. Your reject letter gets changed into an acceptance at the last minute. That happens all the time too.</p>