The post explores the concept of a database for rewrite rules, highlighting the importance of semantics in making these rules meaningful and consistent. A user expresses concern that without semantic understanding, the database of rules could lead to inconsistencies as it expands. They mention that introducing semantic elements could allow a universal approach to rewrite rules to be built, referencing 'abstraction logic' as a useful framework for computer scientists. Additionally, there is also a mention of invertible and partially invertible functions, specifically in the context of gray code conversion, introducing a level of complexity that requires detailed handling. Overall, the need for a robust semantic framework for rewrite rules is emphasized.