Bob and George Planned to Rob a Series of Houses

Bob and George planned to rob a series of houses in a local neighborhood. In addition to casing the neighborhood, the men carefully planned which night they would burglarize each particular house, and they gathered tools specific to each burglary. Additionally, they based their decisions of what house to burglarize on a given day on details they learned about the residents' schedules. The night before the planned burglary of the Smiths's house, Bob and George cased the house once more. The following evening, they went back to the house at 8 p.m., expecting that Smiths to be gone for the evening. To their surprise, the Smiths were at home. Law enforcement investigation later revealed that Bob and George were suspects in a series of home burglaries. Pursuant to a search warrant, the police seized the pair's detailed plans, including the plans to burglarize the Smiths' house. Bob and George were charged with multiple counts of burglary as well as the attempted burglary of the Smiths' house. What legal concept is implicated by this scenario, and what is the likely outcome?