diff --git a/joy/gui/world.py b/joy/gui/world.py
index 80a5735..8085aee 100644
--- a/joy/gui/world.py
+++ b/joy/gui/world.py
@@ -23,7 +23,7 @@ from inspect import getdoc
 from joy.joy import run
 from joy.parser import Symbol
 from joy.utils.stack import stack_to_string
-from joy.utils.polytypes import type_check
+from joy.utils.types import type_check
 
 
 def is_numerical(s):
diff --git a/joy/library.py b/joy/library.py
index 5e59dcc..d31d8f7 100644
--- a/joy/library.py
+++ b/joy/library.py
@@ -236,6 +236,7 @@ codireco == cons dip rest cons
 make_generator == [codireco] ccons
 ifte == [nullary not] dipd branch
 '''
+#
 # 
 # ifte == [nullary] dipd swap branch
 # genrec == [[genrec] cons cons cons cons] nullary swons concat ifte
@@ -365,17 +366,20 @@ class DefinitionWrapper(object):
       class_.add_def(definition, dictionary)
 
   @classmethod
-  def add_def(class_, definition, dictionary):
+  def add_def(class_, definition, dictionary, fail_fails=False):
     '''
     Add the definition to the dictionary.
     '''
     F = class_.parse_definition(definition)
     try:
-      #print F._body
+      # print F.name, F._body
       secs = infer(*F._body)
     except JoyTypeError:
       pass
       print F.name, '==', expression_to_string(F.body), '   --failed to infer stack effect.'
+      if fail_fails:
+        print 'Function not inscribed.'
+        return
     else:
       FUNCTIONS[F.name] = SymbolJoyType(F.name, secs, _SYM_NUMS())
     dictionary[F.name] = F
@@ -405,7 +409,7 @@ def inscribe_(stack, expression, dictionary):
   the definitions.txt resource.
   '''
   definition, stack = stack
-  DefinitionWrapper.add_def(definition, dictionary)
+  DefinitionWrapper.add_def(definition, dictionary, fail_fails=True)
   return stack, expression, dictionary
 
 
@@ -652,6 +656,7 @@ def reverse(S):
 
 
 @inscribe
+@combinator_effect(_COMB_NUMS(), s7, s6)
 @SimpleFunctionWrapper
 def concat_(S):
   '''Concatinate the two lists on the top of the stack.
@@ -982,7 +987,7 @@ def infra(stack, expression, dictionary):
 
 
 @inscribe
-@combinator_effect(_COMB_NUMS(), s7, s6, s5, s4)
+#@combinator_effect(_COMB_NUMS(), s7, s6, s5, s4)
 @FunctionWrapper
 def genrec(stack, expression, dictionary):
   '''
@@ -1396,7 +1401,7 @@ def times(stack, expression, dictionary):
 
 
 @inscribe
-@combinator_effect(_COMB_NUMS(), b1, s6)
+#@combinator_effect(_COMB_NUMS(), b1, s6)
 @FunctionWrapper
 def loop(stack, expression, dictionary):
   '''
diff --git a/joy/utils/polytypes.py b/joy/utils/polytypes.py
index cebe0d9..4210454 100644
--- a/joy/utils/polytypes.py
+++ b/joy/utils/polytypes.py
@@ -1,58 +1,15 @@
 # -*- coding: utf_8
-'''
-
-Multiple Stack Effects
-
-By adjusting the machinery in types.py to handles lists of stack effect comments
-we can capture more information about the type signatures of some functions,
-and we can introduce a kind of Kleene Star or sequence type that can stand for
-an unbounded sequence of other types.
-
-'''
-import sys
-import joy.library
-from joy.parser import Symbol, text_to_expression
-from joy.utils.stack import (
-    concat as CONCAT,
-    expression_to_string,
-    list_to_stack,
-    )
-
-    average = 
-    # sum_ = 
-    # product = 
-    # min_ = max_ = [(((Ns[1], s1), s0), (n0, s0))]
- #   flatten = [(((Ss[1], s1), s0), (s2, s0))]
-
-    return {
-        name.rstrip('_'): stack_effect
-        for name, stack_effect in locals().iteritems()
-        }
 
 
-FUNCTIONS.update({
-    name: SymbolJoyType(name, stack_effect, i)
-    for i, (name, stack_effect) in enumerate(defs().iteritems())
-    })
-FUNCTIONS.update({
-    combo.__name__: CombinatorJoyType(combo.__name__, [combo], i)
-    for i, combo in enumerate((
-        joy.library.concat_,
-        joy.library._dictionary['disenstacken'],
-        joy.library.x,
-        ))
-    })
 
 
-def branch_true(stack, expression, dictionary):
-  (then, (else_, (flag, stack))) = stack
-  return stack, CONCAT(then, expression), dictionary
 
-def branch_false(stack, expression, dictionary):
-  (then, (else_, (flag, stack))) = stack
-  return stack, CONCAT(else_, expression), dictionary
 
-FUNCTIONS['branch'] = CombinatorJoyType('branch', [branch_true, branch_false], 100)
+
+
+
+
+
 pop = FUNCTIONS['pop']
 
 def loop_true(stack, expression, dictionary):
@@ -70,41 +27,42 @@ def loop_false(stack, expression, dictionary):
 FUNCTIONS['loop'] = CombinatorJoyType('loop', [loop_two_true, loop_true, loop_false], 101)
 
 
-joy.library.add_aliases(FUNCTIONS, joy.library.ALIASES)
-
-
-def set_expectations_of_definition(cjt):
-    if len(cjt.stack_effects) != 1:
-        raise ValueError
-    defi = cjt.stack_effects[0]
-    if not isinstance(defi, joy.library.DefinitionWrapper):
-        raise ValueError
-    F = infer_expression(defi.body)
-    assert len(F) == 1, repr(F)
-    fi, fo = F[0]
-    cjt.expect = fi
 
 
 
-def set_expectations():
+
+
+
+
+
+
+
+# joy.library.add_aliases(FUNCTIONS, joy.library.ALIASES)
+
+
+# def set_expectations_of_definition(cjt):
+#     if len(cjt.stack_effects) != 1:
+#         raise ValueError
+#     defi = cjt.stack_effects[0]
+#     if not isinstance(defi, joy.library.DefinitionWrapper):
+#         raise ValueError
+#     F = infer_expression(defi.body)
+#     assert len(F) == 1, repr(F)
+#     fi, fo = F[0]
+#     cjt.expect = fi
+
+
+
     
+    average = 
     loop.expect = s6, (b1, s5)
-#    i.expect = nullary.expect = x.expect = s7, s6
-#    dip.expect = dupdip.expect = s8, (a8, s7)
-#    dipd.expect = s8, (a8, (a7, s7))
-#    dipdd.expect = s8, (a8, (a7, (a6, s7)))
-    concat_.expect = s8, (s7, s6)
-#    b.expect = infra.expect = s8, (s7, s6)
-    # set_expectations_of_definition(unary)
-    # set_expectations_of_definition(binary)
-    # set_expectations_of_definition(ternary)
-    # set_expectations_of_definition(quoted)
-    # set_expectations_of_definition(unquoted)
-    # set_expectations_of_definition(enstacken)
     disenstacken.expect = (As[1], s1), s0
-scope = globals().copy()
-scope.update(FUNCTIONS)
-eval(set_expectations.func_code, scope)
-del scope
+    joy.library._dictionary['disenstacken'],
+  
+
+# scope = globals().copy()
+# scope.update(FUNCTIONS)
+# eval(set_expectations.func_code, scope)
+# del scope