Straw man proposal
A straw-man proposal is a brainstormed simple draft proposal intended to generate discussion of its disadvantages and to provoke the generation of new and better proposals. The term is considered American business jargon, but it's also encountered in engineering office culture. Sometimes "straw dog" is used instead as form of gender-neutral language.
Often, a straw man document will be prepared by one or two people prior to kicking off a larger project. In this way, the team can jump start their discussions with a document that is likely to contain many, but not all the key aspects to be discussed. As the document is revised, it may be given other edition names such as the more solid-sounding "stone-man", "iron-man", and so on.
Origins
The expression was already in use in the United States Department of Defense circa 1975 in their Large Organization Model Building paradigm (LOMB) and was apparently in use with this meaning (initial proposal) in the United States Air Force before that. The succession of names comes from the requirements document for the programming language Ada. In the High Order Language Working Group (HOLWG) the process to define Ada generated requirements documents sporting different names, representing the various stages of development of the Ada language, as described in 1993 by Col William Whitaker in an article ACM SIGPLAN Notices. They are: