Claim: The 19th G7 summit included politicians.
Evidence: The summits were not meant to be linked formally with wider international institutions ; and in fact , a mild rebellion against the stiff formality of other international meetings was a part of the genesis of cooperation between France 's President Giscard d'Estaing and West Germany 's Chancellor Helmut Schmidt as they conceived the first Group of Six -LRB- G6 -RRB- summit in 1975.