diff --git a/demos/MMk.rb b/demos/MMk.rb
index 8182311d7e90a02d554455ee46e4562ec3710854..1e088d882a7367ccbe78f46568fef0a626dd0766 100644
--- a/demos/MMk.rb
+++ b/demos/MMk.rb
@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
 
 # expand the $LOAD_PATH to find local library modules until such
-# time as this gets turned into a Ruby Gem.
+# time as SimpleKit gets turned into a Ruby Gem.
 [File.expand_path(File.dirname(__FILE__), '../lib')].each do |new_location|
   $LOAD_PATH.unshift(new_location) unless $LOAD_PATH.include?(new_location)
 end
diff --git a/demos/MyModelArgs.rb b/demos/MyModelArgs.rb
index 6a8ece2e96678c61bad9716b5161e793b839d8e8..fb47276c3cdd15ae5b5b0eb6631f9680852f8918 100644
--- a/demos/MyModelArgs.rb
+++ b/demos/MyModelArgs.rb
@@ -12,12 +12,12 @@ class MyModel
 
   def init
     @x = 1
-    schedule(:increment, 1.0, 1, 97)
+    schedule(:increment, rand, 1, 97)
   end
 
   def increment(n, c)
     @x += n
-    schedule(:increment, 1.5, @x, c + 1)
+    schedule(:increment, 2.0 * rand, @x, c + 1)
     printf "%f, %f, %c\n", model_time, @x, c
     schedule(:halt, 0.0) if model_time > 10
   end