Singapore's 3 days and Malaysia's 72 hours are not the same deadline
Both look like the same breach-notification window, but the clocks start at different events. Singapore's three days beg...
Guides & How-tos · Worked examples · Real numbers
Do it right, with real numbers
Step-by-step how-tos, head-to-head comparisons and honest roundups — every guide worked through with current figures, then backed by a RECATOOLS calculator or AI-directory entry so you can act on it.
510 guides published
17 topic areas
Latest guide Oct 2026
Statistics
35
Health & Wellness
33
Cybersecurity
30
Business
19
Privacy & Data
17
Consumer Tech
14
ASEAN Tech
13
Personality
9
Cloud & Infra
8
Cyber Threat Intel
7
Sustainability
5
Advertisement
A distress-zone Z-score does not mean a 70% chance of bankruptcy
The Altman Z-score's famous 70% is the share of firms that DID fail which had scored in the distress zone — a sensitivit...
Four ASEAN countries have no time zone of their own
Asia/Phnom_Penh, Asia/Vientiane, Asia/Kuala_Lumpur and Asia/Brunei are not time zones. They are links, and the files beh...
New air conditioners clear a global-warming limit on 2013 figures
Singapore bars household air conditioners whose refrigerant exceeds a global warming potential of 750. The regulator pub...
The calcium formula everyone uses is not the one it cites
Corrected calcium is computed with a coefficient of 0.8 and attributed to Payne 1973 on virtually every clinical referen...
The Army stopped taping. The Marines did not.
Both services replaced the tape test with waist-to-height ratio in 2026 and then disagreed twice over. The Army set the...
Half the pronunciation changes people argued about had already happened
The viral lists of Chinese readings the ministry supposedly changed trace to a 2016 draft that was never issued. But the...
Taiwan's passport rules name no romanisation system at all
The received account is that Taiwan uses Wade-Giles, or 通用拼音, or has moved to Hanyu Pinyin. Article 14 of the passpo...
Your CO2 monitor's red line is a 19th-century number, and it is drifting
The 1000 ppm line is Pettenkofer's, proposed in the 19th century as a proxy for whether a room smelled stuffy. ASHRAE re...
One token can double your bill
OpenAI charges 2x input and 1.5x output on the full request once a prompt passes 272,000 tokens, so the 272,001st token...
One cron line, three different answers
Ask three tools how often 0 0 */2 * 1 runs in September 2026 and you get two firings, seventeen, or four. Cron switches...
Two poison services disagree about how much chocolate your dog can eat
Britain's Veterinary Poisons Information Service answers in grams of chocolate per kilo of dog. The ASPCA and Merck line...
Advertisement