There is a common statement both in scientific publications and popular literature dealing with General Relativity (GR) that geometrical description of gravity is the only logically consistent generalization of the Newtonian classical theory of gravitation. However, a reader, non-aligned to general relativity may put a natural question why it is impossible to consider gravitation in the same way as other physical interactions, i.e. as a quantum field in flat space-time background.
Indeed, such a field approach to gravity has been discussed in the literature and known since the works of Poincar´e in 1905-1906 on the special theory of relativity. The Field Theory of Gravitation (FTG) was considered in classical works of Birkhoff, Moshinsky, Thirring, Kalman, Feynman, Weinberg, and Deser. The history of FTG is full of misleading claims and it demonstrates the hard way of creation and development of scientific ideas.