Law 1) No matter what technical advice you are looking for, it is probably already in the archives.
2) No matter how much of an expert you are on a subject, there are other experts on the same subject who will give conflicting opinions.
3) No matter how careful you are at wording your comment, someone will misread it and challenge you with "gusto".
4) No matter how intimidated you are by the Hangout members, you will find them to be respectable and friendly.
5) If you read page three of any post, it will be impossible to tell what the original post was about.
I'm sure that I have missed millions of others of Murphy's laws as applied to the Hangout... Do you know of others?