Comment.
diff --git a/infocalypse/graph.py b/infocalypse/graph.py
--- a/infocalypse/graph.py
+++ b/infocalypse/graph.py
@@ -512,7 +512,7 @@ class UpdateGraph:
edges.append(step)
# 2 possibly redundant immediate update keys, and MAX_PATH_LEN
- # canonical path keys. Actually one of the canonical keys
+ # canonical path keys. Actually at least one of the canonical keys
# should already be in the immediate updates.
assert len(edges) < 4 + MAX_PATH_LEN
return edges