articles: Add ground rules from Chrome's DEI book club

This should make them easier to refer to when setting ground rules for
the Git inclusion summit.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Change-Id: Ib32aa1075ca17bd641f0052d2f7eb53fdfa82e99
diff --git a/ground-rules.md b/ground-rules.md
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+# Ground Rules for Diversity, Equity, and Inclusion Discussions
+
+**Recognize:** We recognize that we must strive to overcome historical
+and divisive biases, such as racism and sexism, in our society.
+
+**Acknowledge:** We acknowledge that we are all systematically taught
+misinformation about our own group(s) and about members of other
+groups. This is true for everyone, regardless of our group(s).
+
+**No Blame:** We agree not to blame ourselves or others for the
+misinformation we have learned, but to accept responsibility for not
+repeating misinformation after we have learned otherwise.
+
+**Respect:** We agree to listen respectfully to each other without
+interruptions. Only one person speaks at a time. However, this does
+not mean we should ignore problematic statements. See information
+[here](https://baynvc.org/calling-in-and-calling-out/) on calling in
+and calling out. Both approaches are valid and can be done with care
+and respect, with the goal of helping each other learn.  We
+acknowledge that we may be at different stages of learning on the
+content and discussion topics.
+
+**Individual Experience:** We agree that no one should be required or
+expected to speak for their whole race or gender. We can't, even if we
+wanted to.
+
+**Trust:** Everyone has come to the table to learn, grow, and share.
+We will trust that people are doing the best they can; we all make
+mistakes and have bad days; when these occur, let's challenge and
+encourage each other to do better. We acknowledge once again that we
+may be at different stages of learning on the topic.
+
+**Share the Air:** Share responsibility for including all voices in
+the discussion. If you have a tendency to dominate discussions, take a
+step back and help the group invite others to speak. If you tend to
+stay quiet, challenge yourself to share ideas so others can learn from
+you. If you are exceedingly quiet, do expect that the facilitator will
+call on you in meetings to participate.
+
+**Not Experts:** The facilitators are not experts. They are here to
+help facilitate the process. They and everyone in the group are here
+to learn. We also recognize that everyone has an opinion. Opinions,
+however, are not the same as informed knowledge backed up by research.
+Depending on the topic and context, both are valid to share but it's
+important to know the difference. To engage in deep learning, we will
+want to lean more toward informed knowledge and gain practice
+reflecting and speaking thoughtfully on difficult topics.
+
+**Ask for help:** It's okay not to know. Keep in mind that we are all
+still learning and are bound to make mistakes when approaching a
+complex task or exploring new ideas. Be open to changing your mind,
+and make space for others to do so as well.
diff --git a/index.md b/index.md
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--- a/index.md
+++ b/index.md
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 Articles:
 
+- [Ground rules](ground-rules.md) for diversity, equity, and inclusion
+  discussions
 - Kapor Center's [tech leavers
   study](https://www.kaporcenter.org/wp-content/uploads/2017/08/TechLeavers2017.pdf):
   Why people voluntarily left jobs in tech