The validity of an inference depends on the form of the inference. That is, the word valid does not refer to the truth of the premises or the conclusion, but rather to the form of the inference. An inference can be valid even if the parts are false, and can be invalid even if some parts are true.
LONDON -- President Barack Obama and wife Michelle Obama were welcomed to Buckingham Palace in grand royal style Tuesday by Queen Elizabeth II as they began their official state visit to Britain, a rare honor for a U.S. president.bama's mission, in part, is to reassure Britain and the rest of Europe that the traditional U.S. allies still have a central role in a U.S. foreign policy that has become increasingly focused on Asia and other emerging markets.
We thought it was the horse.. As Air Force One arrives at Heathrow Airport, President Obama strides to a warm and dignified reception from the Queen. They are driven in a 1934 Bentley to the edge of central London, where they change to a magnificent 17th century carriage hitched to six white horses.h, that's alright, said the President, for a minute there I thought it was the horse.. And this variant names Ronald Reagan: The Queen of England decides she wants a Kentucky thoroughbred in the royal stable, so she calls President Reagan, who decides to meet her in Lexington, Kentucky.