From 343baf150fe86ad6cd3594828068d42e7bc25b18 Mon Sep 17 00:00:00 2001
From: timofey <tim@ongoteam.yaconnect.com>
Date: Sun, 7 May 2023 16:10:32 +0000
Subject: [PATCH] concerns chapter

---
 src/SUMMARY.md           | 5 +++++
 src/ch04/s00-concerns.md | 6 ++++++
 2 files changed, 11 insertions(+)
 create mode 100644 src/ch04/s00-concerns.md

diff --git a/src/SUMMARY.md b/src/SUMMARY.md
index 78fecc6..4201ee3 100644
--- a/src/SUMMARY.md
+++ b/src/SUMMARY.md
@@ -1,3 +1,8 @@
 # Summary
 
 [Introduction](./ch00/s00-introduction.md)
+
+- [Background]()
+- [Implementation]()
+- [Usage]()
+- [Current Implementation Concerns](./ch04/s00-concerns.md)
diff --git a/src/ch04/s00-concerns.md b/src/ch04/s00-concerns.md
new file mode 100644
index 0000000..ee9ae8a
--- /dev/null
+++ b/src/ch04/s00-concerns.md
@@ -0,0 +1,6 @@
+# Concerns (questions) with the current implementaion
+
+## `Mentionable` isn't `Clone`
+* It's meant to be `Rc`d.
+  * For proper indirection, there is `Point`.
+* It can be re-parsed.