The chart on the blog shows a series of Venn diagrams, which are used in symbolic logic. They group items according to factors that they have in common. Or don’t have in common. NOR is neither, NAND means “not and” and XNOR “exclusive nor.”
Imagine that the square is a field with those two intersecting circles drawn on it, and all the people in town are on the field. All of the people who like baseball are told to stand inside circle A. All of the people who like football are told to stand inside circle B. All of the people who like both baseball and fotball are told to stand inside the are where the two circles intersect. All of the people who have a life are told to stand outside the circles. The shaded area shows where cetain people stand—“A” is “everyone who likes baseball.”
Okay. The “A and B” symbol means “people who like both baseball and football,” with their region shaded. “A nor B” means “people who like neither baseball nor football.” “A XOR B” means “all the people who like either basebal or football, but excluding the people who like both sports or neither sport.” “A NAND B” means “everyone except the people who like both sports.” “True” means “Everyone in town, now that it’s soccer season, and if we cared about soccer we wouldn’t be Americans, now would we?”
The chart on the blog shows a series of Venn diagrams, which are used in symbolic logic. They group items according to factors that they have in common. Or don’t have in common. NOR is neither, NAND means “not and” and XNOR “exclusive nor.”
Imagine that the square is a field with those two intersecting circles drawn on it, and all the people in town are on the field. All of the people who like baseball are told to stand inside circle A. All of the people who like football are told to stand inside circle B. All of the people who like both baseball and fotball are told to stand inside the are where the two circles intersect. All of the people who have a life are told to stand outside the circles. The shaded area shows where cetain people stand—“A” is “everyone who likes baseball.”
Okay. The “A and B” symbol means “people who like both baseball and football,” with their region shaded. “A nor B” means “people who like neither baseball nor football.” “A XOR B” means “all the people who like either basebal or football, but excluding the people who like both sports or neither sport.” “A NAND B” means “everyone except the people who like both sports.” “True” means “Everyone in town, now that it’s soccer season, and if we cared about soccer we wouldn’t be Americans, now would we?”