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+1
+00:00:00,110 --> 00:00:03,090
+So let's look at this one by one. The fact the program takes
+
+2
+00:00:03,090 --> 00:00:06,620
+too long to execute is not really a bad smell. It probably indicates
+
+3
+00:00:06,620 --> 00:00:08,800
+some problem with the code and the fact that we might need to
+
+4
+00:00:08,800 --> 00:00:11,420
+modify the code to make it more efficient, but it's not something that
+
+5
+00:00:11,420 --> 00:00:14,030
+we will normally classify it as a bad smell, so we're not going to
+
+6
+00:00:14,030 --> 00:00:17,850
+mark it. The second one, conversely, is definitely a bad smell. The fact
+
+7
+00:00:17,850 --> 00:00:21,700
+that the method is too long is a typical example of bad smell
+
+8
+00:00:21,700 --> 00:00:25,000
+and one in which we might want to apply some refactoring, for example,
+
+9
+00:00:25,000 --> 00:00:26,450
+the extract method or the
+
+10
+00:00:26,450 --> 00:00:29,240
+decomposed conditional refactorings. There's definitely
+
+11
+00:00:29,240 --> 00:00:32,159
+nothing wrong with the fact that the classes cat and dog
+
+12
+00:00:32,159 --> 00:00:35,600
+are subclasses of class animal. Actually, that sounds pretty appropriate, so
+
+13
+00:00:35,600 --> 00:00:38,270
+this is not a problem and definitely not a bad smell.
+
+14
+00:00:38,270 --> 00:00:40,990
+Whereas the fact that every time we modify method M1,
+
+15
+00:00:40,990 --> 00:00:44,210
+we also need to modify method some other method M2 as
+
+16
+00:00:44,210 --> 00:00:46,690
+a typical example of bad smell. So this can actually be
+
+17
+00:00:46,690 --> 00:00:50,590
+considered a specific example of what we just called "shotgun surgery."
+
+18
+00:00:50,590 --> 00:00:52,500
+So it is a case in which we might want to
+
+19
+00:00:52,500 --> 00:00:55,750
+use, for instance, the move method refactoring to fix the issue.