Sports & GM7 min read
Unplayable Lie Options in Golf: The Three (or Four) Ways Out
Declaring a ball unplayable costs one stroke and gives you three options, four in a bunker. How each works, and when taking one saves strokes.
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All articles, page 20
Articles 457–480 of 990, newest first. To read by subject instead, start from a category or a topic hub on the blog’s front page.
- Sports & GM9 min read
What Is a Balk in Baseball? The 13 Balk Actions and the Disengagement Limit
A balk is an illegal act by the pitcher with runners on base, and every runner moves up. The 13 balk actions, the penalty and the disengagement limit.
- Sports & GM6 min read
What Is Corsi in Hockey? Corsi, Fenwick and PDO Explained
Corsi counts shot attempts, Fenwick drops the blocked ones and PDO adds shooting and save percentages. How each works, a worked example, and where they mislead.
- Sports & GM6 min read
What Is EPA in Football? Expected Points Added and Success Rate, Explained
Expected points put a value on every down, distance and yard line, and EPA measures how much one play changed it. A worked drive shows how success rate differs.
- Sports & GM8 min read
What Is Expected Goals (xG) in Hockey? How Shot-Quality Models Work
Expected goals gives every unblocked hockey shot a probability of scoring. How the models work, how goals saved above expected follows, and what xG can't see.
- Sports & GM7 min read
When to Go for It on Fourth Down: What the Analytics Actually Say
What the landmark fourth-down studies found, the break-even yardage they estimated across the field, and why tracking data shrinks the case for aggression.
- Sports & GM7 min read
When to Pull the Goalie: What the Research Says About Empty-Net Timing
Why trailing hockey teams pull the goalie, what published research found about timing, how the trade-off works, and what the models cannot see.
- Sports & GM7 min read
Why Golf Has 18 Holes — and Where "Birdie", "Eagle" and "Bogey" Came From
Golf's 18-hole round began at St Andrews in 1764 and spread slowly. The documented history, and where par, bogey, birdie, eagle and albatross came from.
- Sports & GM6 min read
Zone vs Man-to-Man Defense: How Each Works, What Each Concedes and When Teams Switch
Man-to-man guards players, zone guards areas. How 2-3, 1-2-2 and 1-3-1 zones work, what each system concedes, and why zone defence is legal in the NBA.
- Education6 min read
Building a Daily History Study Routine
A fifteen-minute daily loop for world history: one new thing, one retrieval session, one sentence written down, and what to change when it stalls.
- Education5 min read
Abstract Reasoning Tests: How the Items Are Built
Abstract reasoning items are engineered objects: a rule, a key and distractors chosen to match specific errors. Knowing the anatomy makes practice sharper.
- Education5 min read
Accessibility in Brain Training Apps: Timers, Reveal Speed and Choice
The four dials that decide whether a timed drill is usable: an untimed alternative, adjustable reveal speed, a difficulty floor, and no single-sense dependency.
- Education6 min read
Accuracy First or Speed First? Getting the Order Right
Speed and accuracy trade against each other, so training them in the wrong order makes you fast at a method that does not work. Here is the order and the test.
- Education7 min read
How Achaemenid Persia Governed: Satraps, Roads and Ration Tablets
Persia's own administrative tablets describe a rationed, sealed, audited state. What the Persepolis archive and the Bisotun inscription actually show.
- Education5 min read
Adding a Long List in Your Head Without Losing Your Place
A list is a memory problem before it is an arithmetic problem. Hold one running total, group to round numbers when you can see the list, and check it twice.
- Sports & GM5 min read
Aging Curves in Career Sims: What Happens After the Peak
Career modes are written about as growth stories, but every career has a second half. What the research says about peak age, and how to play the years after it.
- Action & Arcade6 min read
Bots or People? How AI Rivals Behave Differently in an io Arena
Most io-style arenas are populated by AI, not people. What that changes about how a run starts, how rivals behave, and how to read the field tactically.
- Education5 min read
Analogy Questions: Mapping the Relationship, Not the Words
State the relationship as a full sentence before reading the options. Analogy relationship types, how distractors are built, and worked verbal and number items.
- Education6 min read
Andean Civilizations in Order, From Caral to the Inca
The Inca ruled for under a century. Four thousand years of Andean state-building came first, from Caral and Chavin to Tiwanaku, Wari and the Chimu.
- Education6 min read
Are Online IQ Tests Accurate? What They Can and Cannot Tell You
A free online IQ test fails at the parts that make a score mean anything: controlled conditions, a real norm sample, an administrator and a retest interval.
- Education5 min read
Arithmetic Sequences: Constant Difference, Explained
What a constant difference is, how the nth-term rule is derived rather than memorised, and why the sum of an arithmetic sequence is just pairing.
- Education6 min read
The Armenian Genocide: What Happened and Why the Word Matters
The documented sequence of 1915-16, the death-toll range museums give, who applies the term genocide and who rejects it, and why the dispute persists.
- Education7 min read
Ashoka and the Rock Edicts: A Ruler Who Left His Own Words
Ashoka is one of the few ancient rulers who left a first-person record in stone. What the edicts say, how they were deciphered, and where legend departs.
- Education6 min read
The Atlantic Slave Trade and the Long Fight to Abolish It
Abolition took decades and did not stop the traffic. What the archives record, what the 1807 Act changed, and how enslaved people forced the question.