what did adam find in his desk and why is it important and what was reaction

"Becoming absent minded. Put things away on my desk or in the drawers of the lab tables, and when I can't find them I lose my temper and flare up at everyone."

The absentminded behaviors in addition to the faring temper are signs that he is having the same symptoms of Algernon.

what does this have to do with i am cheese

???

Adam found that he had two birth certificates, which cited different dates of birth. His first thought was, "was I born twice?" But during his session he cites that he figured it was simply a mistake.