FDE case trainer

The full FDE loop, drillable: ambiguous briefs and field situations, documented cases from real loops, the why-FDE filters, the behavioural round, and practical field engineering. Write your attack before you peek, then grade yourself against the framework: clarify, decompose, prioritise, propose, risk. Domain questions the FDE loop shares with AI interviews appear at the end, tagged, and live in the AI trainer too. Answers save on this device, nothing is sent anywhere. For the vocabulary and the loop itself, read the FDE crash course first.

The CTO wants an AI copilot for claims

Hardnot started

You're embedded at a healthcare payer that processes two million claims a day. The CTO wants an AI copilot that flags suspicious claims before they're paid. You have two hours with the claims operations lead, who did not ask for this project and has a day job. Write how you'd run those two hours: what you ask and why, how you break the problem down, what you'd propose as a first phase, and what could sink the whole thing.

Your answer — write it before you peek