Billiard table all six pockets), with rounded entrances and nearly parallel sides, like those on a snooker table. One tactical consequence of this design difference is that the jaws of the WPA-type pocket are often used exactly like a horizontal version of the backboard of a basketball goal, to rebound the ball into the pocket; this technique does not work on blackball tables, and even shots down the cushion into a corner pocket are more difficult. For tournament competition under WPA world-standardized rules (and league play under derived rulesets), the bed of the pocket billiard table must be made of slate no
Table of Opposites Is the universe one? Then how is it diverse? Is the universe many? Then how is it unified? This has historically been known as the problem of the one and the many, about which no small amount of ink has been spilled. Table of Opposites The Table of Opposites ( "sustoichia") of Pythagoras is the oldest surviving of many such tables propounded by philosophers. Aristotle is the main source of our knowledge of the Pythagorean table. Here follows a rough translation of the Table of Opposites, although like all translations the precise meaning does not necessarily carry over from the