This wouldn't work because every pin on the programmer needs to be wired somewhere. Since the blue lines are all connected this would mean both connections would go to the same place. Look at it this way.
| | | | |
1 2 3 4 5 A
1 2 3 4 5 B
| | | | |
In this example, each line is on the same connection. If I wanted 1 from column A to connect somewhere, I would attach a wire in the hoe directly above it and the other end of that wire wherever it needs to go. Now If I wanted 1 from column B, to go somewhere, I can do exactly the same thing. But, since the entire line is connected I would have both, 1 from column A and 1 from column B, going to the two exact same places hence creating a false and unwanted connection.