Samuel's checkers on television
Arthur Samuel showed an IBM 701 playing checkers against a person on live television, four months before the Dartmouth workshop.
Why it matters
The first public showing of a machine that plays and improves shaped expectations of computing before the field had a name.
Samuel had been programming checkers on the IBM 701 since 1952. During the broadcast an expert played the machine for about an hour. Thomas Watson Sr. predicted the demonstration would raise IBM stock fifteen points, and it did. Samuel described the self-improvement mechanism only in the 1959 paper.