Thank you.
Able Danger and this FBI turkey were completely different projects.
From the scanty reports, it sounds like Able Danger was put together as a data mining application by people who were also expert in its use.
In the FBI project, agents who were IT neophytes dictated requirements to the application developers who more or less took them at face value, even as they continued to change far into the project. This is always the kiss of death. Never give the users what they say they want. Understand the users well enough to give the users what they need and more than they expect within the constraints of time and budget.