fitting comment to recommended solution instead

module3/exo1/influenza-like-illness-analysis.ipynb

@@ -7,45 +7,6 @@
     "# Incidence of influenza-like illness in France"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "'/home/jovyan/work/module3/exo1'"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "%pwd"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "analyse-syndrome-grippal.ipynb  influenza-like-illness-analysis.ipynb\r\n",
-      "analyse-syndrome-grippal.org    influenza-like-illness-analysis.org\r\n",
-      "analyse-syndrome-grippal.Rmd    influenza-like-illness-analysis.Rmd\r\n"
-     ]
-    }
-   ],
-   "source": [
-    "%ls\n"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": 3,
@@ -65,6 +26,13 @@
     "The data on the incidence of influenza-like illness are available from the Web site of the [Réseau Sentinelles](http://www.sentiweb.fr/). We download them as a file in CSV format, in which each line corresponds to a week in the observation period. Only the complete dataset, starting in 1984 and ending with a recent week, is available for download."
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "In order to protect us in case the Réseau Sentinelles Web server disappears or is modified, we make a local copy of this dataset that we store together with our analysis. It is unnecessary and even risky to download the data at each execution, because in case of a malfunction we might be replacing our file by a corrupted version. Therefore we download the data only if no local copy exists."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 6,
@@ -94,13 +62,6 @@
     "os.path.exists(data_file)"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "Seeks data from dowloaded file instead of seeking to download the data from theSentinelles site everytime. Robust to site being down, data being updated..."
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {},