Your osteoporosis diagnosis is scored against two different populations at once
The hip T-score is computed against a US survey of white women aged 20–29 measured in 1988–94; the spine T-score against...
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Four different electricity prices are printed on appliance labels in one shop
US regulations fix a refrigerator's running cost at 14 cents a kilowatt-hour, an air conditioner's at 13, a ceiling fan's at 12 and a light bulb's at 11. Electricity actually costs 17.90. Two of those rates were frozen in the same Federal Register document five years apart — and the stale figure penalises the efficient product, understating an LED's saving by 38.5%.
Published 9 Sep 2026
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Malaysia says an e-invoice needs 55 fields; its own appendix marks 20 optional
The tax authority's guideline states that 55 data fields are required to issue an e-invoice. The appendix listing those...
One embedding model, four different maximum lengths
The most downloaded sentence-embedding model ships four config files declaring 128, 256, 512 and 512 as its maximum inpu...
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Vietnam deleted the rule that made its ID numbers decodable, and nobody stopped decoding them
Since 1 July 2024 no Vietnamese instrument says the 12-digit citizen ID has any internal structure. The decree defining...
The annual Sharpe ratio hides an assumption about your returns
Annualising a monthly Sharpe ratio by multiplying by the square root of twelve is not a unit conversion. It is Andrew Lo...
One sky, three verdicts: why Singapore says unhealthy and Malaysia says moderate
The same 70 micrograms of fine particulate reads 116 on Singapore's PSI, 96 on Malaysia's API and 161 on the US AQI. Alm...
Malaysia banned the Rule of 78, and the Rule of 78 was never the expensive part
On Bank Negara's own worked example the Rule of 78 costs an early settler at most about RM632 on a RM100,000 loan. Readi...
The DMARC tag that meant 10% of the time now means all the time
RFC 9989 removed the pct tag in May 2026, and the same document says receivers must ignore tags that are not registered....
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...
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...
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