AI in the workplace was never meant to be a replacement for human judgement. Tools such as Microsoft 365 Copilot can help us move faster: creating a first draft, summarising information, structuring ideas, comparing options or getting past the blank page. Used well, AI is an enabler and gives people a starting point.
Yet a concerning behaviour is beginning to emerge. Instead of treating AI output as something to interrogate, adapt and improve, too many people are treating it as “the truth”. A suggested answer from an AI tool can quickly become the answer.
This is now showing up in the research. The Trust, attitudes and use of artificial intelligence: A global study (2025), led by the University of Melbourne in collaboration with KPMG, surveyed more than 48,000 people across 47 countries and found that many employees rely on AI output without evaluating its accuracy. It also reported that more than half of employees had made mistakes in their work because of AI. Similarly, research published by the American Psychological Association (2026) found that people using AI for simulated work tasks could become more passive in their own reasoning: 58% of participants agreed that AI “did most of the thinking”, and those participants reported lower confidence in their independent reasoning and less ownership of their ideas.
This is not a technology problem as much as it is a business behaviour problem. AI tools are designed to accelerate thinking, but they can also make it easier to outsource thinking. When that happens, productivity gains are replaced by a quieter risk: people stop applying the very judgement, experience and context they were hired to bring.