Purpose: Define what an "Oustervote" is.

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[[Someone want to summarize what [John Ousterhout] meant by
this term?]]

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Having seen and participated in enough oustervotes to start using the term myself, I think I can take a stab.

It just means "unscientific audience poll". Defining hallmarks of an 'oustervote' are:

   * it's a simple multiple choice, single-answer question, you answer by raising hands
   * you always include a catch-all choice so that everyone votes, even if it's "undecided" or "other"
   * you summarize the results in front of the audience right after the last choice
   * it's almost always used a piece of data to make a comment or plan a course of action right there ("So the majority of users still use emacs" or "So it's pretty clear even if we had this feature, less than a third present would ever touch it", etc.