gibusbleghfarecpotatohTo minimize the chances of misunderstandings, each person should read the file on their own and not
listen to other people’s summaries (tl;dr’s are quite dangerous here). Reading what other people say about
my experiences has the risk of them injecting false information in their summaries (intentional or not).
this warning is incredibly ironic given that the entire document is a summary based on their "recollection"
i dont understand the reasoning behind doing this and not just recording audio
The tours and conversations Valve employees have with guests are entirely done in good faith, and multiple times that good faith been exploited to leak information, such as internal issue lists for Source 2 among other projects. Since long ago, Valve has never allowed video recording and/or photography inside their offices (with certain promotional exceptions), and I highly doubt they'd allow audio recording either.
In addition, if such audio were released of the developers speaking, whether by accident or purposefully, it would be a potential risk to the employee themselves in cases where they say something they shouldn't or they become harassed by the community.
Also, it's important to note:
PotatoDo not read too much into any single thing; you should read the file with a 10,000 foot view.