added explanation

app.py

@@ -493,8 +493,12 @@ with block as demo:
             </a>. Our code can be found at 
             <a href="https://github.com/D0miH/does-clip-know-my-face" style="text-decoration: underline;" target="_blank">
                 GitHub
-            </a>
-          </p>.
+            </a>.
+            <br><br>
+            <b>How does it work?</b> We are giving CLIP your images and let it choose from 1000 possible names. 
+            As CLIP is predicting the names that match the given images, we can probe whether the model has seen your images 
+            during training.
+          </p>
         </div>
         """
     )