I got told about the Pacman rule 7+ years ago and it has improved my experience of conferences ever since. Sharing the rule each time a circle 'closes' to make sure there's a space has lead to meeting some of the most interesting people and opened up conversations in directions I never expected. Highly recommended.
Always love seeing the Pacman rule at the #PyconUS intro. If you want to read more, see my blog post from 9 (!) years ago.
https://www.ericholscher.com/blog/2017/aug/2/pacman-rule-conferences/
