Why do you think Bi-Wiring improves the sound ?

I must say that I don't get the bi-wiring routine. It seems to me all that is
being accomplished is adding more connections (points of failure). If you have good speaker cable to begin with doubling it does virtually zero. The signal still has to go through the passive crossover with its inherent flaws.
The amp is still going to feel the back EMF of the woofers. Oh well. Some things should just remain mysterious to me.

^^^^ typical post of someone reading the title and inserting their 0¢.

'Good' speaker wire is meaningless. The cable is part of a system and $$$ is often sonically and measurably worse than ¢¢¢.

If you want to know, there are plenty of well written papers explaining the electrical theory. See  http://www.ielogical.com/Audio/CableSnakeOil.php

@ieales    
Thank You for the link, I read it yesterday , very interesting .

The question is does it improve the sound ?
i.e. does the sound stage increase , get deeper , do you have more of a 3D effect , is the music clearer or sharper ?
I asked the question because I can't
( as a retired biomedical equipment technician ) grasp why it seems to sound better to many who have tried it
( without increasing the overall awg ) ,
but I had the same feeling about power cords and outlets until 
I tested and heard the improvements so I am curious about bi-wiring .

As for Glenlivet , I prefer Glenfarclas .

@ieales " ^^^^ typical post of someone reading the title and inserting their 0¢.

'Good' speaker wire is meaningless. The cable is part of a system and $$$ is often sonically and measurably worse than ¢¢¢."

I've been called many things but "typical" is not one of them. A first!
I don't understand your second and third sentences quoted above. 
Please educate me. 

Lastly, in the spirit of banter, by "good" I mean that the owner of the rig
and cables thinks they are "good" and I don't see how that is meaningless. 

Funny, I feel the same about people who link to their blogs to appear erudite but then make fundamental errors or overly simplified generalizations that result in the wrong conclusion most of the time ... Hint, is the emitter resistor in the feedback or not?

^^^^ typical post of someone reading the title and inserting their 0¢.