diff --git a/Notebooks/Chap08/8_1_MNIST_1D_Performance.ipynb b/Notebooks/Chap08/8_1_MNIST_1D_Performance.ipynb
index f58ef4a..fde2efa 100644
--- a/Notebooks/Chap08/8_1_MNIST_1D_Performance.ipynb
+++ b/Notebooks/Chap08/8_1_MNIST_1D_Performance.ipynb
@@ -5,7 +5,7 @@
     "colab": {
       "provenance": [],
       "gpuType": "T4",
-      "authorship_tag": "ABX9TyMS3eC1zdmYpxyE92ZhJT5G",
+      "authorship_tag": "ABX9TyPGPaoiBh2+pDXEg3CSmVoi",
       "include_colab_link": true
     },
     "kernelspec": {
@@ -228,7 +228,9 @@
       "source": [
         "**TO DO**\n",
         "\n",
-        "Play with the model -- try changing the number of layers, hidden units, learning rate, batch size, momentum or anything else you like.  See if you can improve the results."
+        "Play with the model -- try changing the number of layers, hidden units, learning rate, batch size, momentum or anything else you like.  See if you can improve the test results.\n",
+        "\n",
+        "Is it a good idea to optimize the hyperparameters in this way?  Will the final result be a good estimate of the true test performance?"
       ],
       "metadata": {
         "id": "q-yT6re6GZS4"