SF and Quantum Mechanics, #2

About ten days ago, on May 3, 2010, I did a post, "SF and Quantum Mechanics #1," and today's post is the follow-up. Although there really are a zillion things one might talk about in this context, in these two posts I'm focusing on six areas. I went into (1) – (3) in my SF & QM #1 post, and in the fairly extensive and interactive comments—these discussions involved possible SF stories involving (1) the Planck length, (2) many universes, and (3) superposed states. And now, in "SF & QM #2," ...