diff --git a/Summit2016.md b/Summit2016.md
index 1c5c475..bb8276e 100644
--- a/Summit2016.md
+++ b/Summit2016.md
@@ -22,11 +22,11 @@ For sure:
 * Daira
 * meejah
 * Zooko
+* David
 
 Probably:
 
 * Liz
-* David?
 
 Nope:
 
@@ -47,6 +47,9 @@ Nope:
 * (meejah) GUI (/WUI/CLI) things (e.g moar JSON endpoints, ...)
 * (meejah) allow/deny storage servers (i.e. I want a grid where only "my" storage servers are used)
 * (zooko) #1382 (We don't need to talk about it, we just need to do it. Brian and I can sit elbow to elbow until it is done, if he wants. ☺)
+* (david) asymmetric crypto "caps"
+* (david) chacha20 crypto caps
+* (david) data structures and or caps that support group revocation schemes via threshold of valid signatures
 
 ## things referred to during the Summit