Sports & GM3 min read
Racing Points Systems: How F1 Scores a Season, and How It Has Changed
How championship points work under F1's 2026 rules: 25-18-15 down to 1, shortened races, sprint points, count-back tie-breaks, and how the system evolved.
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All articles, page 11
Articles 241–264 of 990, newest first. To read by subject instead, start from a category or a topic hub on the blog’s front page.
- Sports & GM3 min read
Racing Tyre Strategy: Compounds, Stints and the Two-Compound Rule
How tyre strategy works under F1's 2026 rules: soft, medium and hard compounds, the two-compound rule, set allocations, one-stop versus two-stop and wet tyres.
- Education4 min read
Ramsey Numbers: Why R(3,3) = 6
In any group of six people, three are mutual friends or mutual strangers. The proof, why five is not enough, and why Ramsey numbers are so hard to compute.
- Education5 min read
Recurrence Relations: Setting Them Up and Solving the Linear Ones
How to model a problem with a recurrence relation and solve linear ones with constant coefficients, including repeated roots and a constant extra term.
- Education3 min read
Risk Tolerance and Time Horizon: Questions to Ask Before Any Investment
Risk tolerance is your ability and willingness to lose money for higher potential returns. How time horizon changes it, a drawdown test and questions to ask.
- Education5 min read
Roman Republic vs Roman Empire: What Changed and When
The Roman Republic and Roman Empire compared: consuls and Senate versus a princeps, why 27 BC is the usual dividing line, and what Augustus kept and changed.
- Education4 min read
The RSI Indicator: How It Is Calculated and Why "Overbought" Is Not a Forecast
The Relative Strength Index compares recent gains with recent losses on a 0–100 scale. How Wilder's RSI is calculated and why overbought is not a sell signal.
- Sports & GM5 min read
How Professional Rugby Careers Are Built: Academies, Contracts and Positions
How professional rugby careers are built: England's academy phases from 15 to 20, senior contracts, the women's game and World Rugby eligibility rules.
- Education4 min read
Rules of Inference: Modus Ponens, Modus Tollens and the Rest, with Worked Arguments
The rules of inference used in discrete math, from modus ponens to resolution and the quantifier rules, with a numbered derivation and the fallacies to avoid.
- Languages4 min read
Russian Adjective Endings: Gender, Number and Case
Russian adjective endings in one table: -ый, -ая, -ое, -ые through all six cases, soft stems like синий, the хороший spelling rule, and short forms.
- Languages3 min read
Russian Greetings: Zdravstvuyte, Privet and Formal Address
Russian greetings by situation: formal здравствуйте and casual привет, good morning to good evening, ты or вы, name and patronymic, and saying goodbye.
- Languages4 min read
Russian Numbers: Counting, and the Case That Follows Each Number
Russian numbers from zero to a million, and the rule that matters most: why it is один рубль, два рубля but пять рублей, and what happens after 11 to 14.
- Languages4 min read
Russian Personal Pronouns in Every Case
Russian pronouns in all six cases: я, ты, он, она, оно, мы, вы, они and себя, the extra н- after prepositions, со мной and обо мне, and formal Вы.
- Languages4 min read
The Russian Soft Sign and Hard Sign: What Ь and Ъ Do
The Russian soft sign ь softens the consonant before it (брат vs брать) and marks grammar after ж, ш, ч, щ; the hard sign ъ splits a prefix from я, е, ё, ю.
- Health3 min read
Safe Minimum Cooking Temperatures, Explained
Safe minimum cooking temperatures from the US chart: 145°F for steaks and fish, 160°F for ground meat and egg dishes, 165°F for poultry and leftovers.
- Sports & GM3 min read
Safety Car Rules Explained: SC, Virtual Safety Car and Restarts
How the safety car and virtual safety car work under the FIA's 2026 F1 rules: when each is used, gaps and overtaking, lapped cars, pit stops and the restart.
- Education4 min read
Sigma Notation and Sums: Reading, Splitting and Proving Summation Formulas
How to read Σ notation, the rules for splitting and shifting sums, the standard closed forms, telescoping sums, and how to prove a sum formula.
- Education4 min read
Set Operations Explained: Union, Intersection, Difference and Complement
Union, intersection, difference, complement and symmetric difference, each defined with a Venn picture and a worked example, plus how to prove set identities.
- Education4 min read
How Short Selling Works, and Why Its Losses Have No Ceiling
Short selling means selling borrowed shares and buying them back later. How a short sale works step by step, its costs, and why its losses are unlimited.
- Education3 min read
What SIPC Protection Covers, and What It Does Not
SIPC protects up to $500,000 per customer, including $250,000 cash, if a member brokerage fails. It does not cover market losses. Limits and examples.
- Sports & GM3 min read
Slipstream and Drafting in Racing: Why Following Closely Is Faster
How slipstreaming works: the low-pressure wake, why both cars can go faster, dirty air in corners, NASCAR drafting, and F1's 2026 Overtake mode.
- Health4 min read
Slow Breathing and Relaxation: What Research Supports and What It Does Not
What research says about slow breathing and relaxation: what counts as slow, the effects reviews have found, how strong the evidence is and its limits.
- Sports & GM3 min read
Soccer Career Games on Android Compared: Play the Match, Live the Career or Draft the XI
Three soccer games compared: Football Career Soccer League (play matches), Soccer XI Sim (a career of decisions) and Pro Football GM Club Soccer (draft).
- Utilities4 min read
How to Improve Speech-to-Text Accuracy: Recording Tips That Matter
How to improve speech-to-text accuracy: what makes recognition fail, how word error rate works, and the recording habits that cut errors before you transcribe.