Cuba Gooding Jr. has done his O.J. research and his conclusion is clear ... he wants nothing to do with the guy.
Our photog got the star of "American Crime Story: The People v. OJ Simpson" leaving 1 OAK in WeHo Thursday, and Cuba scoffed at the notion of chitchatting with Simpson.
Cuba also says no one knows what really happened on June 12, 1994. Lots of people disagree.