GIGO is a real concern in software development and AI, as it can lead to inaccurate or undesirable results if the input data is of poor quality. An expert system, which relies on a knowledge base and inference engine, can be particularly susceptible to GIGO if the data used to train it is incorrect or biased. This can result in flawed decision-making or recommendations, with real-world consequences. The use of AI systems without proper validation and testing can lead to these issues, highlighting the need for developers to prioritize accurate and reliable input data.