I don't often think this, so if you can figure what is helpful here and
   pull it out or improve it, it could help.
   For pilgrims:
   This is a dangerous environment.  We are trying not to influence it
   much.  Many of the people here are the caring kinds of people we are
   familiar with.  But among us are some widespread subsystems that can
   strongly use information in harmful ways.  We have also all learned
   information, some unknown subset of which is very harmful.