diff --git a/Erasure-Coding-for-warm-storage.md b/Erasure-Coding-for-warm-storage.md
index d2eb2a1..db5c382 100644
--- a/Erasure-Coding-for-warm-storage.md
+++ b/Erasure-Coding-for-warm-storage.md
@@ -1,4 +1,4 @@
-This erasure coding implementation took some ideas from [f4: Facebook’s Warm BLOB Storage System](https://www.usenix.org/system/files/conference/osdi14/osdi14-paper-muralidhar.pdf).
+This erasure coding implementation took some ideas from [f4: Facebook’s Warm BLOB Storage System](https://www.usenix.org/system/files/conference/osdi14/osdi14-paper-muralidhar.pdf), without its high requirements.
 
 Usually data is hot when it is fresh, and are accessed very often. SeaweedFS normal volumes tries hard to minimize the disk operations, but it comes with a cost of loading indexes in memory.