with all due respect but what does this mean? we can either "all know" or we can all not have a clue and have our own "visions" of the correct form, both of these are complete opposites.

decades of building garbage-barely-working forms is a proof that we just do not know (much like we (generally) don't know how to center a div on the page so once-per-year, without fail, top story on HN is "how to center a div" :) ).