Unkindness Of Ravens Unkindness Of Ravens Unkindness Of Ravens is an Irish gothic rock/metal band formed in 2014 in Tipperary, Ireland. Their debut album "Under Stolen Skies" was released in November 2015 on now defunct label Dura Gesta Records [] based in Michigan in the United States. The band's first single "Leanan Sídhe" was released simultaneously with an accompanying video which explored themes around ancient Irish mythological characters and was filmed in The Burren and Slieve Bloom Mountains. The band is fronted by Darren Keegan and the band's style has been described as "melancholic and dramatic." The band was created by Keegan with
Collectively exhaustive events or not. For example, tossing a particular biscuit for a group of several dogs cannot be repeated, no matter which dog snaps it up. One example of an event that is both collectively exhaustive and mutually exclusive is tossing a coin. The outcome must be either heads or tails, or p (heads or tails) = 1, so the outcomes are collectively exhaustive. When heads occurs, tails can't occur, or p (heads and tails) = 0, so the outcomes are also mutually exclusive. The term "exhaustive" has been used in the literature since at least 1914. Here are a few examples: