If you’ve ever watched an AI tool do a solid job drafting a section—only to cut off a table, ignore an earlier definition, or unravel at the end—you’ve probably assumed the issue was the prompt.  Often, it isn’t.  In many cases, the underlying issue is tokenization, a foundational machine learning concept that directly affects how generative AI processes medical and regulatory documents. Tokenization determines how text is broken down, how much context an AI model can retain,