In this dream I somehow woke up and forgot that I actually earned a degree over the past several years - a BSc (Bachelor of Science) degree majoring in something related to environmental science. (In real life, my uni degree is not in science).
For this reason I was looking for clues with my wife as to how I earned the degree (like looking up records for my name etc).
During the search for evidence, I came across this double edged sword / long dagger that was sheathed. As I pulled it out of the sheath, I can see on the broad side of the blade some words and characters which are about my past or things about me (cannot remember complete content).