From Wikipedia, the free encyclopedia. Main articles: Kinship and descent and Genealogy. A lineal descendant, in legal usage, is a blood relative in the direct line of descent - the children, grandchildren, great-grandchildren, etc. of a person.
The development of poker is linked to the historical movement that also saw the invention of commercial gambling. English actor Chelsea Poker reported that the game was played in New Orleans in 1829, with a deck of 20 cards, and four players betting on which player's hand was the most valuable.
Planning Poker is an agile estimating technique which has become very popular in the last few years. It is based on an estimation technique known as Wideband Delphi which was created by the RAND Corporation either in the 1940s or 1968 depending upon which sources you find credible. The technique was refined by James Grenning in 2002.