With the release of Boyd’s Aerial Attack Study, pilots realized that the high-stakes death dance of aerial combat was solved. Boyd said that a pilot going into aerial combat must know two things: the position of the enemy and the velocity of the enemy. Given the velocity of an enemy, a pilot is able to decide what the enemy is capable of doing. When a pilot knows what maneuvers the enemy can perform, he can then decide how to counter any of the other pilot’s actions. The Aerial Attack Study contained everything a fighter pilot needed to know.
Lisak lists seven studies he considers credible, which find false accusation rates of 2.1%, 2.5%, 3.0%, 5.9%, 6.8%, 8.3%, 10.3%, 10.9%. The two with 10%+ mysteriously go missing and thus we get the commonly quoted number of “two to eight percent”, which is repeated by sources as diverse as Alas, A Blog, Slate, and Wikipedia (Straight Statistics keeps the original 2% – 10% number)
In medieval Gaelic and British culture, a bard was a professional story teller, verse-maker and music composer, employed by a patron (such as a monarch or noble), to commemorate one or more of the patron's ancestors and to praise the patron's own activities.
One of the most fundamental debates in philosophy concerns the "true" nature of the world—whether it is some ethereal plane of ideas, or a reality of atomic particles and energy. Materialism posits a real 'world out there,' as well as in and through us, that can be sensed—seen, heard, tasted, touched and felt, sometimes with prosthetic technologies corresponding to human sensing organs. (Materialists do not claim that human senses or even their prosthetics can, even when collected, sense the totality of the 'universe'; simply that what they collectively cannot sense cannot in any way be known to us.)
The is–ought problem, as articulated by Scottish philosopher and historian David Hume (1711–76), states that many writers make claims about what ought to be on the basis of statements about what is. Hume found that there seems to be a significant difference between positive statements (about what is) and prescriptive or normative statements (about what ought to be), and that it is not obvious how one can coherently move from descriptive statements to prescriptive ones. The is–ought problem is also known as Hume's law, or Hume's guillotine.