@jasongorman I agree with sibling that it’s a low friction prototyping tool but can also be used for inspecting and modifying data from from somewhere (DB, etc). Pry is pretty powerful when used with ruby (optionally rails): http://pry.github.io/ and let’s you navigate/page through results of DB data via your domain model. It does a lot more than that, supporting REPL-driven development (loading/saving/running tests and files from SUT in the REPL).