there are more then a few that can be found with the search, including no foreknowledge of the borg. – The preceding unsigned comment was added by184.108.40.206 (talk).
This has been proposed and rejected a few times in the past, as what many people consider a "retcon" is just a nitpick which is not something that we want to catalog. There may be citeable examples of "retcons" but any list would need to be limited to that, if that was something we wanted to do. 31dot (talk) 01:09, February 13, 2013 (UTC)