I once broke a chat bot by creating a circular reference in the underlying database. You were allowed to bind a request with a response using the verb is. So

I once broke a chat bot by creating a circular reference in the underlying database. You were allowed to bind a request with a response using the verb is. So for example Python is a scripting language would respond to people saying. What is python. Would have the chatbot output Python is a scripting Language I then input the below command. Is is is This broke the bot and persisted the breakage to the point where the database had to be fixed.