diff --git a/README.md b/README.md
index b8eb381..471d189 100644
--- a/README.md
+++ b/README.md
@@ -34,4 +34,6 @@ ok first week is medium-difficult-ish but do-able, dot & cross products, stuff f
 
 calc 3, even tho the first week is linear algebra-ish review, its like the text/words in the book -> my immediate imagination i dunno, once its there then it makes sense, but i can keep asking claude to explain it to be simplier so i dont have to memorize really i dunno, rn i feel like my frustration/embarrassment is like, holy sht i forgot some of this stuff but its like duh, i havent taken linear algebra since 2012, maybe i should make voice notes too for myself
 
-claude: "is just the boring edge case" me: EXACTLY!! lol
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+claude: "is just the boring edge case" me: EXACTLY!! lol
+
+claude: "The textbook actually calls this out directly on page xx — it warns you to distinguish ## from ##, because they look almost identical but mean different things." its so crazy it can do this. ok i have to study then we're going out to dinner
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