When the AI makes a decision and it turns out to be wrong — who is accountable?
Joseph Weizenbaum built ELIZA in the 1960s — the first chatbot, which simulated a therapist. He was disturbed by how readily people formed emotional attachments to it and how seriously they took its responses. This led him to write Computer Power and Human Reason in 1976, arguing that even if machines could make certain decisions — in medicine, law, criminal justice, warfare — human society should not allow them to. The reason: accountability. When a human makes a decision and it goes wrong, there is someone who can be held responsible, who can explain their reasoning, who carries moral weight. When a machine makes the decision, accountability dissolves. Fifty years later, the argument is not weaker. It has become more urgent.
AI makes the decision and executes without human review. Appropriate when: the decision is high volume and low stakes, outcomes are easily measurable, errors are low-cost and reversible, and the model has demonstrably high accuracy on this specific task.
Examples: Spam filtering, inventory reorder triggers, product recommendations, fraud alert scoring (not flagging — the score calculation).
Accountability: Belongs to the team that built, deployed, and operates the system — including the decision to automate.
AI informs and the human decides. Appropriate when: stakes are higher, errors are costly or irreversible, context and judgment matter, or the decision has ethical, legal, or reputational dimensions. The human retains authority and accountability.
Examples: Hiring recommendations (human decides), medical diagnosis support (clinician decides), credit underwriting (loan officer decides), parole recommendations (board decides).
Accountability: The human who made the decision — the AI provides input, not the outcome.
Some decisions should not be delegated to AI regardless of capability. These are decisions where the act of human judgment — weighing, deliberating, being accountable — is itself part of what makes the decision legitimate.
Examples: Lethal autonomous weapons targeting, criminal sentencing, child welfare removal decisions, firing employees, end-of-life medical decisions.
Accountability: Non-delegable — this is precisely Weizenbaum's argument.
When multiple AI systems operate across an organisation, central governance becomes impractical. A federated model distributes oversight responsibilities while maintaining common standards. Each layer handles what it's positioned to handle:
Accountability follows the decision, not the tool. When AI is in the loop, the question isn't whether the machine made the right call — it's who decided to let the machine make the call, and who is responsible for what happens next. Weizenbaum's insight from 1976: some decisions are human decisions not because machines can't make them, but because humans shouldn't abdicate them.
What is automation bias — and why does it undermine the "human in the loop" design?
Weizenbaum's 1976 argument is sometimes summarised as "just because a machine can make a decision doesn't mean it should." What is the deeper principle he was making — and which type of decisions does he say humans must retain?
Describe the three layers of a federated AI governance model and what each layer is responsible for.