diff --git a/notes/knoledge-hydrant.md b/notes/knoledge-hydrant.md
index f47efb1..cffed2e 100644
--- a/notes/knoledge-hydrant.md
+++ b/notes/knoledge-hydrant.md
@@ -279,10 +279,89 @@ collaborations will develop.
 ## 2. ATMOSPHERE
 
 ### 2.1 COMMON GROUND
+
+People want to connect with others but aren't willing
+to do so in settings that make them feel uncomfortable. Location plays a vital role in the life of a group.
+
+> Oldenburg's thesis is that people need informal public places
+where they can gather, put aside the concerns of work and
+home, relax, and talk. Germany's beer gardens, England's
+pubs, and French and Viennese cafes created this outlet in
+people's lives, providing a neutral ground where all are equal
+and conversation is the main activity. 
+
+**Hold public study groups where diverse individuals will all
+be on common ground. The best locations are easy for
+people to get to, but not too close to their offices or homes.**
+
 ### 2.2 PUBLIC LIVING ROOM
+
+Great locations for study groups resemble large, comfortable living rooms. There are various types of chairs that may be rearranged, perhaps a sofa and rugs, some lamps or other warm lighting, and windows. When people feel comfortable they forget about themselves and may freely engage in dialogue.
+
+_Some of the best locations are quiet, aesthetic places that invite reflection_: a centrally located cafe, a spacious gallery or bookstore, a room with a magnificent view, or some nook or corner of a hotel or lodge.
+
+> Place each sitting space in a position which is protected, not
+cut by paths or movements, roughly circular, made so that
+the room itself helps suggest the circle - not too strongly -
+with paths and activities around it, so that people naturally
+gravitate toward the chairs when they get into the mood to
+sit. Place the chairs and cushions loosely in the circle, and
+have a few too many.
+
+**Choose a warm, spacious establishment where people will
+enjoy mingling before and after study sessions, where there
+is comfortable, rearrangeable furniture, plenty of warm lighting, and a variety of foods and drinks.**
+
 ### 2.3 INTIMATE CIRCLE
+
+**Awkward seating arrangements alienate people and thwart a
+group's ability to work together. The best configurations
+allow participants to easily see and hear each other. Yet
+many establishments don't provide either the furniture or
+space to make this happen, or don't let groups rearrange the
+furniture.**
+
+> ...**people will feel oppressed, both when they are either
+working in an undifferentiated mass of workers and when
+they are forced to work in isolation**. The small group
+achieves a nice balance between the one extreme in which
+there are so many people, that there is no opportunity for an
+intimate social structure to develop, and the other extreme in
+which there are so few, that the possibility of social groups
+does not occur at all.
+...
+In our own survey of attitudes towards workspace -- taken
+among workers at the Berkeley City Hall -- **we found that
+people prefer to be part of a group that ranges from two to
+eight.** When there are more than eight, people lose touch
+with the group as a human gathering. 
+
+**Choose a location with ample room, many tables and chairs,
+and the freedom to rearrange the spaces to form rough
+circles or ovals that may dynamically expand or contract.**
+
 ### 2.4 VIRTUAL SPACE
 
+**Without an online presence, a study group will lack a cost-effective way of advertising its existence, organizing events,
+staying connected and attracting new members.**
+
+The trick to building a good site, is to avoid loading the site with too much
+content that will regularly change, and to enlist the group's participants to
+maintain the content that will need routine updating.
+
+If the study group keeps a [DISTRIBUTED DIARY](#46-distributed-diary) or provides feedback
+to authors, it is a good idea to post this material to the site, for the edification
+of group members, and to foster online dialogue. For conducting such
+dialogues, a simple, group email server or service (such as eGroups) is useful.
+[AGENDA](#43-agenda) are particularly helpful for members and non-members of a
+group and are therefore best placed on the site. A good agenda will span
+several months, giving people the chance to plan their schedules and study
+readings prior to group meetings ([3.4 PREPARED PARTICIPANT](#34-prepared-participant)).
+
+**Establish an online presence where the study group's
+mission, activities, and [DISTRIBUTED DIARIES](#46-distributed-diary) are posted, where members may continue dialogues, or chat, and where prospective members may learn more about the
+group.**
+
 ## 3. ROLES
 
 ### 3.1 ENTHUSIASTIC LEADER