26. A system to develop a clinical trial protocol, the system comprising: a memory device comprising a historical database, the historical database storing a plurality of individual tasks from multiple clinical trial protocols associated with past protocol dates, each individual task of said plurality of individual tasks being categorized for a particular clinical indication and particular trial phase; and a protocol design tool operatively connected to said historical database, said protocol design tool configured to: receive a request to query said historical database, said request including user-specified filtering criteria having a clinical indication, trial phase and past time window; retrieve a subset of individual tasks from said plurality of individual tasks based on said filtering criteria, at least a first individual task in said subset from a first clinical trial protocol and a second individual task in said subset from a second clinical trial protocol, said past protocol dates of said first clinical trial protocol and said second clinical trial protocol being within said past time window, each of the individual tasks included in said subset being associated with a numerical association strength criterion that indicates at least a predetermined strength of association of each of the individual tasks in said subset to other clinical trial protocols for the clinical indication and trial phase; receive a selection of at least one individual task from said subset; and instantiate, in a structured protocol modeling database, at least one object identifying said at least one individual task.
26. A system to develop a clinical trial protocol, the system comprising: a memory device comprising a historical database, the historical database storing a plurality of individual tasks from multiple clinical trial protocols associated with past protocol dates, each individual task of said plurality of individual tasks being categorized for a particular clinical indication and particular trial phase; and a protocol design tool operatively connected to said historical database, said protocol design tool configured to: receive a request to query said historical database, said request including user-specified filtering criteria having a clinical indication, trial phase and past time window; retrieve a subset of individual tasks from said plurality of individual tasks based on said filtering criteria, at least a first individual task in said subset from a first clinical trial protocol and a second individual task in said subset from a second clinical trial protocol, said past protocol dates of said first clinical trial protocol and said second clinical trial protocol being within said past time window, each of the individual tasks included in said subset being associated with a numerical association strength criterion that indicates at least a predetermined strength of association of each of the individual tasks in said subset to other clinical trial protocols for the clinical indication and trial phase; receive a selection of at least one individual task from said subset; and instantiate, in a structured protocol modeling database, at least one object identifying said at least one individual task. 27. A system according to claim 26 , wherein the protocol design tool is further configured to exclude from said subset individual tasks whose association with the previous clinical trial protocols fail a particular association strength criterion.