 Flood is considered a pioneer in the field of management science and operations research, who has been able to apply their techniques to problems on many levels of society.According to Xu (2001) "as early as 1936–1946, he applied innovative systems analysis to public problems and developed cost-benefit analysis in the civilian sector and cost effectiveness analysis in the military sector".In the 1940s Flood publicized the name Traveling salesman problem (TSP) within the mathematical community at mass.