thousand times already you know the table you know everything in all these cases you can actually run a test first but it's true that sometimes we actually don't know what how to do the side effects that we are asked for we for example maybe the logic for your new application functionality in its it needs to cause some restful endpoint to get some for exchange and you have never used it and you don't know the end point and you don't know what you need to give to it and you don't know what it's going to give you about or maybe you need to