diff --git a/src/selection/examples.py b/src/selection/examples.py
index 102fc5a..2c149a7 100644
--- a/src/selection/examples.py
+++ b/src/selection/examples.py
@@ -10,5 +10,6 @@ class selection_examples:
         chromosomes in the population. The stronger the fitness the higher the probability
         that it will be selected. Using the example of a casino roulette wheel.
         Where the chromosomes are the numbers to be selected and the board size for
-        those numbers are directly proportional to the chromosome's current fitness."""
+        those numbers are directly proportional to the chromosome's current fitness. Where
+        the ball falls is a randomly generated number between 0 and 1"""
         pass