diff --git a/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb b/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
index 6db49ed..66e8d07 100644
--- a/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
+++ b/.ipynb_checkpoints/not_so_obvious_python_stuff-checkpoint.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:29a120258e2d108ed5eace08e071ad866ae379b4f24fde804401ee858a2090fb"
+  "signature": "sha256:39951e0d86a78e2a0068b01db48a79c51e896c8f05c69e387c77e0fb68eaec41"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -404,6 +404,10 @@
       "\n",
       "If both values of in a `or` expression are True, Python will select the first one, and the second one in `and` expressions\n",
       "\n",
+      "Or - as a reader suggested - picture it as  \n",
+      "`a or b == a if a else b`  \n",
+      "`a and b == b if a else a`  \n",
+      "\n",
       "(Original source: [http://gistroll.com/rolls/21/horizontal_assessments/new](http://gistroll.com/rolls/21/horizontal_assessments/new))"
      ]
     },
@@ -427,13 +431,6 @@
      ],
      "prompt_number": 9
     },
-    {
-     "cell_type": "markdown",
-     "metadata": {},
-     "source": [
-      "And a fun fact"
-     ]
-    },
     {
      "cell_type": "markdown",
      "metadata": {},
@@ -448,7 +445,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "Don't use mutable objects (e.g., dictionaries, lists, sets, etc.) as default arguments for functions! You might expect that a new list is created every time when we call the function without providing an argument for the default parameter, but this is not the case: Python will create the mutable object (default parameter) only the first time the function is called, see the following code:\n",
+      "Don't use mutable objects (e.g., dictionaries, lists, sets, etc.) as default arguments for functions! You might expect that a new list is created every time when we call the function without providing an argument for the default parameter, but this is not the case: Python will create the mutable object (default parameter) the first time the function is defined - not when it is called, see the following code:\n",
       "\n",
       "(Original source: [http://docs.python-guide.org/en/latest/writing/gotchas/](http://docs.python-guide.org/en/latest/writing/gotchas/)"
      ]
@@ -599,9 +596,11 @@
       "\n",
       "## About lambda and closures-in-a-loop pitfall\n",
       "\n",
-      "The following example illustrates how the (last) `lambda` is being reused:\n",
+      "Remember the [\"consuming generators\"](consuming_generators)? This example is somewhat related, but the result might still come unexpected. \n",
       "\n",
-      "(Original source: [http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html](http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html))"
+      "(Original source: [http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html](http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html))\n",
+      "\n",
+      "In the first example below, where we call a `lambda` function in a list comprehension, the value `i` is dereferenced every time we call `lambda` within the scope of the list comprehension. Since the list is already constructed when we `for-loop` through the list, it is set to the last value 4."
      ]
     },
     {
@@ -627,13 +626,13 @@
        ]
       }
      ],
-     "prompt_number": 24
+     "prompt_number": 11
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "**Here, a generator can save you some pain:**"
+      "This, however, does not apply to generators:"
      ]
     },
     {
@@ -659,7 +658,7 @@
        ]
       }
      ],
-     "prompt_number": 25
+     "prompt_number": 9
     },
     {
      "cell_type": "markdown",
@@ -985,7 +984,7 @@
       "\n",
       "**A. Jesse Jiryu Davis** has a nice explanation for this phenomenon (Original source: [http://emptysqua.re/blog/python-increment-is-weird-part-ii/](http://emptysqua.re/blog/python-increment-is-weird-part-ii/))\n",
       "\n",
-      "If we try to extend the list via `+=` *\"then the statement executes STORE_SUBSCR, which calls the C function PyObject_SetItem, which checks if the object supports item assignment. In our case the object is a tuple, so PyObject_SetItem throws the TypeError. Mystery solved.\"*"
+      "If we try to extend the list via `+=` *\"then the statement executes `STORE_SUBSCR`, which calls the C function `PyObject_SetItem`, which checks if the object supports item assignment. In our case the object is a tuple, so `PyObject_SetItem` throws the `TypeError`. Mystery solved.\"*"
      ]
     },
     {
diff --git a/not_so_obvious_python_stuff.ipynb b/not_so_obvious_python_stuff.ipynb
index 1ad2108..66e8d07 100644
--- a/not_so_obvious_python_stuff.ipynb
+++ b/not_so_obvious_python_stuff.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:5f8052b5458fbe30e4066fd51688157e823dbbcce9f2e4ef402acfc6af40d046"
+  "signature": "sha256:39951e0d86a78e2a0068b01db48a79c51e896c8f05c69e387c77e0fb68eaec41"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -404,6 +404,10 @@
       "\n",
       "If both values of in a `or` expression are True, Python will select the first one, and the second one in `and` expressions\n",
       "\n",
+      "Or - as a reader suggested - picture it as  \n",
+      "`a or b == a if a else b`  \n",
+      "`a and b == b if a else a`  \n",
+      "\n",
       "(Original source: [http://gistroll.com/rolls/21/horizontal_assessments/new](http://gistroll.com/rolls/21/horizontal_assessments/new))"
      ]
     },
@@ -427,13 +431,6 @@
      ],
      "prompt_number": 9
     },
-    {
-     "cell_type": "markdown",
-     "metadata": {},
-     "source": [
-      "And a fun fact"
-     ]
-    },
     {
      "cell_type": "markdown",
      "metadata": {},
@@ -448,7 +445,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "Don't use mutable objects (e.g., dictionaries, lists, sets, etc.) as default arguments for functions! You might expect that a new list is created every time when we call the function without providing an argument for the default parameter, but this is not the case: Python will create the mutable object (default parameter) only the first time the function is called, see the following code:\n",
+      "Don't use mutable objects (e.g., dictionaries, lists, sets, etc.) as default arguments for functions! You might expect that a new list is created every time when we call the function without providing an argument for the default parameter, but this is not the case: Python will create the mutable object (default parameter) the first time the function is defined - not when it is called, see the following code:\n",
       "\n",
       "(Original source: [http://docs.python-guide.org/en/latest/writing/gotchas/](http://docs.python-guide.org/en/latest/writing/gotchas/)"
      ]
@@ -599,9 +596,11 @@
       "\n",
       "## About lambda and closures-in-a-loop pitfall\n",
       "\n",
-      "The following example illustrates how the (last) `lambda` is being reused:\n",
+      "Remember the [\"consuming generators\"](consuming_generators)? This example is somewhat related, but the result might still come unexpected. \n",
       "\n",
-      "(Original source: [http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html](http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html))"
+      "(Original source: [http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html](http://openhome.cc/eGossip/Blog/UnderstandingLambdaClosure3.html))\n",
+      "\n",
+      "In the first example below, where we call a `lambda` function in a list comprehension, the value `i` is dereferenced every time we call `lambda` within the scope of the list comprehension. Since the list is already constructed when we `for-loop` through the list, it is set to the last value 4."
      ]
     },
     {
@@ -627,13 +626,13 @@
        ]
       }
      ],
-     "prompt_number": 24
+     "prompt_number": 11
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "**Here, a generator can save you some pain:**"
+      "This, however, does not apply to generators:"
      ]
     },
     {
@@ -659,7 +658,7 @@
        ]
       }
      ],
-     "prompt_number": 25
+     "prompt_number": 9
     },
     {
      "cell_type": "markdown",