Point out that your roommate has just experienced hindsight bias or the I knew it all along phenomenon.
Hindsight bias is the tendency to believe only after learning the outcome that one would have foreseen it beforehand. In simpler terms, hindsight bias is believing that you knew something only after you heard it or that you would've known it before hearing about it.
Hope this helps!
Explanation:
He studied law at Howard University. As counsel to the NAACP, he utilized the judiciary to champion equality for African Americans
