This research challenges previous findings about RNA editing in fungi, specifically in a group called Basidiomycota. The study shows that what was thought to be RNA editing was actually due to technical errors in genome analysis or differences between fungal samples. This has important implications for understanding how fungi regulate their genes. Impacts on everyday life: • Improves our understanding of how fungi process genetic information • Helps scientists avoid errors in future genetic studies of fungi • Contributes to better methods for analyzing genetic data • May influence how we study fungi used in medicine and industry • Demonstrates the importance of careful verification in scientific research