repro disclaimer

docs/pages/fitting_nn.ipynb

@@ -190,7 +190,7 @@
    "source": [
     "This code shouldn't take more than 30 seconds or so to run.\n",
     "\n",
-    "The above plot tells us how the model performs as it iterates on its weights."
+    "The above plot tells us how the model performs as it iterates on its weights. Note that while enforcing the seeds above enforces reproducibility from run to run *on a single machine*, there still may be some operating system-dependent differences in the plots and results shown here."
    ]
   },
   {