How Chinese Given Names Actually Work — and Why Everyone Picks the Same Ones
A person could once carry four names: a milk name, a generation character shared with every cousin, a given name, and a...
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.
299 guides published
17 topic areas
Latest guide Sep 2026
Health & Wellness
12
Statistics
12
ASEAN Tech
11
Privacy & Data
10
Personality
7
Cloud & Infra
7
Home & Living
7
Consumer Tech
6
Cyber Threat Intel
6
Business
5
Sustainability
4
Advertisement
If You Put Engineers Inside Your Customers, Do You Still Have a Software Company?
The question every product leader has about forward deployment is financial, and almost nobody selling the model will an...
Before You Hire Anyone to Deploy AI, Read the Report They Are Quoting
Every pitch for embedded AI engineering rests on one statistic: 95% of enterprise AI pilots fail. I downloaded the paper...
What a Forward Deployed Engineer Is, and Which Numbers to Believe
Every claim about this job travels faster than its source. The famous "729% growth" is arithmetically correct and almost...
Why It Confidently Makes Things Up
We asked two AI models for five peer-reviewed studies on an obscure topic, with DOIs. One produced five — authors, journ...
Tokens and Context Windows, Explained From Zero
You are billed in a unit nobody explained. A token is a countable stand-in for a chunk of text — the word is borrowed fr...
What an LLM Actually Costs You
The rate per million tokens is the one number you cannot change, and the smallest part of the bill. Measured on 102 para...
The Chapter Everyone Skips: 孫子兵法 and the AI Capital War
Business writing quotes 知彼知己 and misquotes it — the received text reads 百戰不殆, not the 百戰百勝 that Sun Tzu expl...
Mean, Median, Mode: The Average Is a Choice, Not a Fact
Three different numbers are all correctly called "the average", and which one gets published changes what a reader concl...
A High R² Does Not Mean the Model Is Right
Anscombe printed one regression summary for four data sets in 1973 and said the features that matter are "invisible if w...
Standard Deviation vs Standard Error: Two Numbers, Two Questions
Mean ± 4.36 and mean ± 0.97 are not two ways of saying the same thing. Altman and Bland assigned each to a different que...
What a 95% Confidence Interval Actually Means
Nearly everyone reads a confidence interval as "there is a 95% probability the true value is in here" — including 59% of...
Advertisement