diff --git a/package.json b/package.json
index a87fa31..3af6dea 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,8 @@
   "license": "MIT",
   "dependencies": {
     "babel-preset-es2015": "^6.13.2",
-    "babel-preset-stage-0": "^6.5.0"
+    "babel-preset-stage-0": "^6.5.0",
+    "stampit": "^3.0.6"
   },
   "devDependencies": {
     "babel-register": "^6.14.0",
diff --git a/src/index.js b/src/index.js
index 5237ff4..5a8f70a 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,26 +1,18 @@
-export function double ( x ) {
-  return x * 2;
-}
-
-export function doubleXTimes ( x, num ) {
-  let result = x;
-
-  for ( let i = 1; i <= num; i++ ) {
-    // result = result * 2;
-    result = double( result );
+import stampit from 'stampit';
+//
+export const Animal = stampit({
+  properties: {
+    SOUND: "generic sound"
+  },
+  methods: {
+    speak(sound = this.SOUND) {
+      return sound;
+    }
   }
+});
 
-  return result;
-}
-
-export function doubleEach ( arr ) {
-  let result = arr.map( double );
-
-  // const result = arr.map( x => double( x ) );
-  // const result = arr.map( function ( x ) {
-  //   return double( x );
-  // });
+export const Reptile = stampit().compose(Animal).properties({SOUND: 'reptile sound'});
 
-  return result;
-}
+export const Primate = stampit().compose(Animal).properties({SOUND: 'primate sound'});
 
+export const Human = stampit().compose(Primate).properties({SOUND: 'human sound'});
diff --git a/src/spec.js b/src/spec.js
index 3e22930..5b3039d 100644
--- a/src/spec.js
+++ b/src/spec.js
@@ -1,30 +1,62 @@
 import test from 'tape';
-import { double, doubleXTimes, doubleEach } from './index';
+import { Animal, Reptile, Primate, Human } from './index';
+import stampit from 'stampit';
+// import isStamp from 'stampit/isStamp';
 
-test( 'double fn', function ( test ) {
-  const actual = double( 5 );
-  const expected = 10;
+test('Can create "stamps?" from Animal stamp', function(test) {
 
-  test.equal( actual, expected, 'should double the value' );
+  const animal = Animal();
+
+  test.ok( typeof animal.speak == 'function', 'animal has a speak function.. "looks like an Animal"' );
+
+  test.equal( animal.speak(), 'generic sound', 'Sounds like an Animal');
+
+  console.log('* Animal says: ' + animal.speak() );
+  // Must be an Animal?
 
   test.end();
 });
 
-test( 'doubleXTimes', function ( test ) {
-  const actual = doubleXTimes( 5, 3 );
-  const expected = 40;
 
-  test.equal( actual, expected, 'should double 5 three times' );
+test('More "inheritance" stamp tests', function(test) {
+
+  let actual, expected;
+
+  const reptile = Reptile();
+
+  test.ok( typeof reptile.speak == 'function', 'reptile has a speak function.. "looks like an Animal"' );
+
+  expected = reptile.SOUND;
+  actual = reptile.speak();
+  console.log('* reptile says: ', actual);
+  test.equal( actual, expected, 'should make a reptile sound when it speaks.. "Sounds like a Reptile"' );
+
+  const primate = Primate();
+
+  test.ok( typeof primate.speak == 'function', 'primate has a speak function.. "looks like an Animal"' );
+
+  expected = primate.SOUND;
+  actual = primate.speak();
+  console.log('* primate says: ', actual);
+  test.equal( actual, expected, 'should make a primate sound when it speaks.. Sounds like a Primate' );
 
   test.end();
 });
 
-test( 'doubleEach', function ( test ) {
-  const actual = doubleEach([ 0, 1, 2 ]);
-  const expected = [ 0, 2, 4 ];
 
-  test.deepEqual( actual, expected, 'should double each in the array' );
+test('Human tests...', function(test) {
+
+  let actual, expected;
+
+  const human = Human();
+  //hmmmmm
+  test.ok( typeof human.speak == 'function', 'reptile has a speak function.. "looks like an Animal"' );
+
+  const message = 'hello';
+  expected = message;
+  actual = human.speak( message );
+  console.log('* human says: ', actual);
+  test.equal( actual, expected, 'should make a primate sound when it speaks.. Sounds like a Primate' );
 
   test.end();
 });
-