Books are documents. A generalized document bot might be useful for bot creation, for many use cases that are conversationally focused on data that is "frozen",

Books are documents. A generalized document bot might be useful for bot creation, for many use cases that are conversationally focused on data that is "frozen", like a book. Conversely, an analytics bot that ingests and can converse about analytical information related to a business is also useful for data in motion. This is more based on time series data and running analytical queries based on conversational language.