Best path to test different interconnects?

i'd like to make two points. a cable sounds the same regardless of where it is placed--component or stereo system. it is the same cable in stereo system A and stereo system B. It is the same whether it is connected to CD player A and CD player B. A cable is a catalyst. you will not hear the sound of the cable, but rather its affect upon the sound of a stereo system.

secondly, there is another way to evaluate cables which has been completely overlooked. I can't take credit for this. it was suggested to me by the president of Wireworld.

i expect the audio purists to crticize this approach because of the female-to-female connector.

here it is:

Connect cable A between CD player and preamp. listen. next, take cable B, use a female-to-female connector, insert at end of cable A and insert cable B between connector and preamp. Note differences between the sound of stereo system with cable A and cables A & B. Also, note that cables may be directional. When listening to a cable, listen in both directions--speaker or interconnect.

there is more to this approach, but i hope the possibilities of this approach may provide an alternative to the usual mode for cable testing.

has anyone ever tried this approach ??