diff --git a/docs/scenarios/speed.rst b/docs/scenarios/speed.rst
index eac21b3..5a4bd13 100644
--- a/docs/scenarios/speed.rst
+++ b/docs/scenarios/speed.rst
@@ -1,7 +1,7 @@
 Speed
 =====
 
-Python isn't the fastest language around (yet)
+CPython, the most commonly used implementation of Python, is slow for CPU bound tasks. `PyPy`_ is fast.
 
 
 Context
@@ -53,4 +53,7 @@ Spanwing Processes
 
 
 Multiprocessing
----------------
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+---------------
+
+
+.. _`PyPy`: http://pypy.org
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