I thought the point of having a meeting-notes person was so that at least one person would pay attention to details during the meeting.
Also, ensure that if the final decition was to paint the the bike shed green, everyone agree it was the final decitions. (In long discusions, sometimes people misunderstand which was the final decition.)
I thought it was so I could go back 1 year and say, 'I was against this from the beginning and I was quite vocal that if you do this, the result will be the exact mess you're asking me to clean up now.'