diff --git a/lib/typed/parfait/space.rb b/lib/typed/parfait/space.rb
index da476663..8785f162 100644
--- a/lib/typed/parfait/space.rb
+++ b/lib/typed/parfait/space.rb
@@ -21,26 +21,27 @@ module Parfait
 
   class Space < Object
 
-    def initialize
-      raise "Space can not be instantiated by new, you'd need a space to do so. Chicken and egg"
-    end
-    attributes [:classes , :types, :first_message]
-
-    # need a two phase init for the object space (and generally parfait) because the space
-    # is an interconnected graph, so not everthing is ready
-    def late_init
+    def initialize(classes )
+      @classes = classes
+      @types = Dictionary.new
       message = Message.new(nil)
       50.times do
-        self.first_message = Message.new message
-        #puts "INIT caller #{message.object_id} to #{self.first_message.object_id}"
-        message.set_caller self.first_message
-        message = self.first_message
+        @first_message = Message.new message
+        #puts "INIT caller #{message.object_id} to #{@first_message.object_id}"
+        message.set_caller @first_message
+        message = @first_message
       end
-      classes.each do |name , cl|
-        types[cl.instance_type.hash] = cl.instance_type
+      @classes.each do |name , cl|
+        @types[cl.instance_type.hash] = cl.instance_type
       end
     end
 
+    def self.attributes
+      [:classes , :types, :first_message]
+    end
+
+    attr_reader :types , :classes , :first_message
+
     # Make the object space globally available
     def self.object_space
       @@object_space
@@ -65,8 +66,8 @@ module Parfait
     # return nili if no such class. Use bang version if create should be implicit
     def get_class_by_name( name )
       raise "get_class_by_name #{name}.#{name.class}" unless name.is_a?(Symbol)
-      c = self.classes[name]
-      #puts "MISS, no class #{name} #{name.class}" unless c # " #{self.classes}"
+      c = @classes[name]
+      #puts "MISS, no class #{name} #{name.class}" unless c # " #{@classes}"
       #puts "CLAZZ, #{name} #{c.get_type.get_length}" if c
       c
     end
@@ -76,16 +77,18 @@ module Parfait
     def get_class_by_name! name
       c = get_class_by_name(name)
       return c if c
-      create_class name , get_class_by_name(:Object)
+      create_class name 
     end
 
     # this is the way to instantiate classes (not Parfait::Class.new)
     # so we get and keep exactly one per name
-    def create_class name , superclass
+    def create_class( name , superclass = nil )
       raise "create_class #{name.class}" unless name.is_a? Symbol
       superclass = :Object unless superclass
-      c = Class.new(name , superclass )
-      self.classes[name] = c
+      raise "create_class #{superclass.class}" unless superclass.is_a? Symbol
+      type = get_class_by_name(superclass).instance_type
+      c = Class.new(name , superclass , type )
+      @classes[name] = c
     end
 
     def sof_reference_name
diff --git a/lib/typed/parfait/typed_method.rb b/lib/typed/parfait/typed_method.rb
index a9ada113..13f092b3 100644
--- a/lib/typed/parfait/typed_method.rb
+++ b/lib/typed/parfait/typed_method.rb
@@ -22,7 +22,12 @@ module Parfait
 
   class TypedMethod < Object
 
-    attributes [:name , :source , :instructions , :binary ,:arguments , :for_type, :locals ]
+    def self.attributes
+      [:name , :source , :instructions , :binary ,:arguments , :for_type, :locals ]
+    end
+
+    attr_reader :name , :instructions , :for_type ,:arguments , :locals , :binary
+
     # not part of the parfait model, hence ruby accessor
     attr_accessor :source
 
@@ -31,12 +36,15 @@ module Parfait
       raise "No class #{name}" unless type
       raise "For type, not class #{type}" unless type.is_a?(Type)
       raise "Wrong argument type, expect Type not #{arguments.class}" unless arguments.is_a? Type
-      self.for_type = type
-      self.name = name
-      self.binary = BinaryCode.new 0
-      self.arguments = arguments
-      self.locals = Type.new Space.object_space.get_class_by_name( :Object )
+      @for_type = type
+      @name = name
+      @binary = BinaryCode.new 0
+      @arguments = arguments
+      @locals = Type.new Space.object_space.get_class_by_name( :Object )
+    end
 
+    def set_instructions(inst)
+      @instructions = inst
     end
 
     # determine whether this method has an argument by the name
@@ -47,7 +55,7 @@ module Parfait
     end
 
     def add_argument(name , type)
-      self.arguments = self.arguments.add_instance_variable(name,type)
+      @arguments = @arguments.add_instance_variable(name,type)
     end
 
     def arguments_length
@@ -55,10 +63,10 @@ module Parfait
     end
 
     def argument_name( index )
-      arguments.get(index * 2 + 1)
+      arguments.names.get(index + 1)
     end
     def argument_type( index )
-      arguments.get(index * 2 + 2)
+      arguments.types.get(index + 1)
     end
 
     # determine if method has a local variable or tmp (anonymous local) by given name
@@ -71,7 +79,7 @@ module Parfait
     def add_local( name , type )
       index = has_local name
       return index if index
-      self.locals = self.locals.add_instance_variable(name,type)
+      @locals = @locals.add_instance_variable(name,type)
     end
 
     def locals_length
@@ -79,18 +87,19 @@ module Parfait
     end
 
     def locals_name( index )
-      locals.get(index * 2 + 1)
+      locals.names.get(index + 1)
     end
+
     def locals_type( index )
-      locals.get(index * 2 + 2)
+      locals.types.get(index + 1)
     end
 
     def sof_reference_name
-      "Method: " + self.name.to_s
+      "Method: " + @name.to_s
     end
 
     def inspect
-      "#{self.for_type.object_class.name}:#{name}(#{arguments.inspect})"
+      "#{@for_type.object_class.name}:#{name}(#{arguments.inspect})"
     end
 
   end
diff --git a/test/typed/parfait/test_space.rb b/test/typed/parfait/test_space.rb
index a87f9570..74fb62d3 100644
--- a/test/typed/parfait/test_space.rb
+++ b/test/typed/parfait/test_space.rb
@@ -74,4 +74,13 @@ class TestSpace < MiniTest::Test
     assert all.include?(:next_message)
   end
 
+  def test_create_class
+    assert @machine.space.create_class( :NewClass )
+  end
+
+  def test_created_class_is_stored
+    @machine.space.create_class( :NewerClass )
+    assert @machine.space.get_class_by_name(:NewerClass)
+  end
+
 end