<I>Scientific American</I> tells you how to construct a quantum eraser at home&mdash;a devise that proves that actions in the present can change our basic interpretation of what happened in past events.

B&W Group North America (Equity) has announced that Doug Henderson will assume the position of vice president of sales and marketing as of April 30. Henderson has been a principal of Audtek Associates for more than 20 years. "I'm excited about this move," Henderson told <I>Stereophile</I>. "At Audtek, we specialized in brand building, and we accomplished a lot with some very good companies. With B&W Group, I have the opportunity to use those skills with some of the finest equipment available today&mdash;and I have a great independent sales force to work with. It's an unrivaled opportunity."

When the brief flowering of quadraphonics began in the early 1970s, I was still at school. As a nascent but impecunious audiophile, I therefore had a ringside seat at the audio industry's first attempt to go multichannel&mdash;and, even for the disinterested onlooker, it wasn't a pretty spectacle.

When the brief flowering of quadraphonics began in the early 1970s, I was still at school. As a nascent but impecunious audiophile, I therefore had a ringside seat at the audio industry's first attempt to go multichannel&mdash;and, even for the disinterested onlooker, it wasn't a pretty spectacle.

<I>"Men must eat, though angels be their guests."<BR>&mdash;William Laird, "Tr&#228;umerei at Ostendorff's"</I>

<I>"Men must eat, though angels be their guests."<BR>&mdash;William Laird, "Tr&#228;umerei at Ostendorff's"</I>

I have not seen <I>Borat! Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan</I>, and I am not likely to. But the phrase <I>cultural learnings of America</I> is a good jumping-off point for an important topic: cultural literacy.

I have not seen <I>Borat! Cultural Learnings of America for Make Benefit Glorious Nation of Kazakhstan</I>, and I am not likely to. But the phrase <I>cultural learnings of America</I> is a good jumping-off point for an important topic: cultural literacy.