All articles starting with R
22,461 articles
Rule of Three (film)
Rule of Three (film) covers several unrelated films: Eric Shapiro's 2008 motel-room thriller, Louis Garrel's 2011 French short La règle de trois, Elwood Quincy Walker's 2021 OCD horror short, and James Roday Rodriguez's upcoming curse feature.
Rule of three (writing)
Rule of three (writing): a principle grouping words, phrases, examples, or ideas in threes for humor, satisfaction, and persuasiveness; classical form is the tricolon (veni, vidi, vici). Used by Steve Jobs, Obama, and legal writers; grounded in three-item memory limits.
Rule of thumb
Rule of thumb: an English idiom for a rough, experience-based guideline rather than exact calculation. Earliest print use 1658; derives from thumb-based measuring, not the false wife-beating-law etymology spread in the 1970s.
Rule of Wen and Jing
The Rule of Wen and Jing (文景之治) was a period of recovery in the early Western Han dynasty under Emperors Wen and Jing, 180 to 141 BC.
Rule the World (独步天下)
Rule the World (独步天下) is a 2017 Chinese historical romance drama, 45 episodes, adapted from Li Xin's novel, starring Tang Yixin and Raymond Lam as Dong Ge and Hong Taiji, streamed on Tencent Video from October 30, 2017; distinct from the 2022 drama Who Rules the World.
Rule utilitarianism
Rule utilitarianism: a utilitarian ethical theory judging actions by conformity to rules whose general acceptance maximizes well-being, opposed to act utilitarianism; associated with Brandt, Harsanyi, Hooker, and Hare's two-level theory.
Rule-of-law crisis in the European Union
The rule-of-law crisis in the European Union is the confrontation between EU institutions and member states, above all Hungary and Poland, over judicial independence and EU law.
Rule, Britannia!
Rule, Britannia! is a British patriotic song by Thomas Arne and James Thomson, first performed in 1740 and often treated as Britain's unofficial second anthem.
Ruled paper
Ruled paper, also called lined paper, is paper printed with horizontal lines, and sometimes vertical margins, that guide handwriting; mechanized by pen-ruling machines in the 1840s.
Ruled surface
A ruled surface is a surface swept out by a moving straight line, so a straight line lies on it through its points; examples include the plane, cone, and helicoid.
Ruler
A ruler, also called a line gauge, is a strip of wood, metal, or plastic marked with length units, used to measure distance and guide straight-line drawing.
RULER (artificial intelligence)
RULER is a synthetic long-context benchmark from NVIDIA, introduced in April 2024 to measure a language model's effective context length rather than its advertised window.
Ruler (film)
Ruler (రూలర్) is a 2019 Telugu action drama, Balakrishna's 105th film, directed by K.S. Ravikumar, produced by C. Kalyan, co-starring Vedhika and Sonal Chauhan; released 20 December 2019, negatively reviewed and a commercial failure.
Rulership (ルーラーシップ) (horse)
Rulership (ルーラーシップ), Japanese Thoroughbred racehorse and Shadai stallion, foaled 2007 by King Kamehameha out of Air Groove; won 2012 Hong Kong QE II Cup (G1); sire of Kiseki, Soul Rush, Redentor.
Rules Don't Apply
Rules Don't Apply is a 2016 American romantic comedy-drama written, directed, and produced by Warren Beatty, who stars as Howard Hughes opposite Lily Collins and Alden Ehrenreich.
Rules for Radicals
Rules for Radicals: A Pragmatic Primer for Realistic Radicals, Saul Alinsky's 1971 Random House book of thirteen rules for grassroots community organizing by the Have-Nots; his last book, influential on left organizers and Tea Party activists alike.
Rules of baseball
Rules of baseball: the codified playing rules, chiefly MLB's Official Baseball Rules, plus WBSC, NCAA, and NFHS codes. Covers strike zone, infield fly, balks, 2023 pitch-clock and shift changes, and ABS adoption for 2026.
Rules of basketball
Rules of basketball: codified playing regulations from James Naismith's 1891 original 13 rules to today's FIBA Official Basketball Rules, NBA Official Rules, and NCAA rules, differing in game length, court size, three-point distance, and foul limits.
Rules of chess
Rules of chess, governed by the FIDE Laws of Chess (effective 1 January 2023) and the US Chess Official Rules 7th edition: piece movement, castling, en passant, promotion, checkmate, stalemate, draws, clocks, and touch-move.
Rules of cribbage
Rules of cribbage: card game attributed to Sir John Suckling (c. 1635), derived from Noddy. Two players deal six cards, discard two to the crib, peg to 31, and score fifteens, pairs, runs, and flushes; first to 121 wins.
Rules of engagement
Rules of engagement (ROE) are military directives issued by competent authority setting the circumstances and limits for initiating or continuing combat engagement. Policy rather than law, they govern US (SROE), NATO, and UN peacekeeping operations.
Rules of Engagement (film)
Rules of Engagement (2000) is a William Friedkin military courtroom drama starring Tommy Lee Jones and Samuel L. Jackson about a Marine court-martialed for killing 83 Yemeni civilians; Paramount release, mixed reviews, Arab-American controversy.
Rules of Engagement (Larsen novel)
Rules of Engagement (Tom Clancy Rules of Engagement) is a 2026 techno-thriller by Ward Larsen, his first Jack Ryan novel, in which President Ryan investigates a plane crash in Turkey that killed the Secretary of Commerce.
Rules of Engagement (TV series)
Rules of Engagement, CBS sitcom created by Tom Hertz (2007–2013, 100 episodes, seven seasons), starring Warburton, Spade, Hudson, Price, Kajlich; two couples plus a bachelor, renewed for syndication value.
Rules of Go
Rules of Go: the formal rule sets governing Go, including Chinese, Japanese, Korean, AGA, Ing, and New Zealand rules, differing in area versus territory scoring, komi of 6.5 or 7.5, suicide, seki, and superko treatment of repeated positions.
Rules of netball
Rules of Netball: World Netball's official rulebook for seven-a-side netball; 2024 Edition effective 1 January 2024, covering positions, footwork, obstruction, and the FAST5 short format.
Rules of snooker
Rules of snooker: WPBSA codified regulations (September 2024 rulebook) for the 15-red, six-colour cue sport, covering equipment, scoring, fouls, free ball, foul and a miss, and Six Reds Snooker.
Rules of the Eurovision Song Contest
Rules of the Eurovision Song Contest: EBU regulations approved by the Reference Group covering eligibility, the three-minute live-vocal format, jury and audience voting, conduct, and hosting, updated annually for each edition.
Rules of water polo
Rules of water polo: World Aquatics (formerly FINA) Competition Regulations, Part Six, governing field (25.60x20 m), seven-a-side teams, shot clock, fouls, VAR, and 4x4 variant; NCAA and NFHS adapt them in the US.
Rules versus discretion
Rules versus discretion is a macroeconomic policy question: should policymakers commit to a systematic rule for adjusting policy, or decide case by case with judgment?