//ABCD
//A = the chosen bomb is a dud or live
-//B = the photon took the path of the bomb (measured by the bomb, exploded!)
+//B = the bomb measures the photon (on the upper path)
//C = the photon took the upper path
//D = the photon took the lower path
//
-//There should be some probability of 1001
-//This means the bomb is live (which we place on the upper path),
-// the photon did not take the path of the bomb (nothing detected, no explosion)
-// and the CD=01 measurement outcome cannot occur for a dud bomb (only 10)
-//Hence, we know the bomb is live without interacting with it.
-
-sample;
\ No newline at end of file
+//In the case of the bomb being a dud, only CD=10 can occur.
+//In the case of the bomb being live, CD=01 or CD=10 can occur.
+// Notice: CD=01 can only occur if the bomb is live.
+//Recall that the bomb is measured on the upper path.
+// This means there is a 12.5% chance that the randomly
+// chosen bomb is live, the bomb measures nothing, and the
+// outcome is something unique to a bomb being live (1001).
+sample;