clarity

1 files changed, 2 insertions, 1 deletions

diff --git a/README.md b/README.md
index 376ac7c..8dbb8a9 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,8 @@ definition.
 A generator is an object that can produce a series of values, one
 value at a time.  Generators are sometimes convenient when you want to
 deal with series that are too long to fit into memory. They also help
-when you want to generate sequential data using functions.
+when you want to generate sequential data using recurrence relations,
+as in the Fibonacci example above.
 
 ### Three Kinds Of Function