Build judgment through evidence and practice.
Understand the world.
Start with a question.
Learning methods, research notes and practical tools I am building.
What would you like to work on?
Check whether a claim holds up
Separate the claim from its evidence and identify what remains uncertain.
Start with one claimMake sense of research and data
Find the research question, then examine the sample, comparison and numbers.
Find the research questionCreate something grounded in evidence
Connect sources, reasoning and prose in a one-page explanation you can revise.
Build a one-page explanationProjects in practice
View all projects
Learning & Creative Investment Ledger
Link learning expenses to notes, outcomes and reviews.
Project Resume
Leave a next step, then resume your project with its files.
Decision Review
Record reasons, revisit outcomes and save lessons.
ADV Home
Install from microSD, choose an app and set auto start.
Try one question
From 20% to 30%: what is the relative increase?
An AI answer says ‘a 10% increase’. Calculate it yourself before deciding how to revise it.
Show the calculation
The increase is 10 percentage points. Relative growth divides by the starting rate: (30% − 20%) ÷ 20% = 50%.
Practice percentages and percentage points →Keep practicing: logic and statistics
What would you conclude?
From 20% to 30%: what actually changed?
A completion rate goes from 20% to 30%. Did it rise by 10% or 50%?
Open this lessonNecessary or sufficient: is registration enough?
'You may enter only if registered.' Does being registered guarantee admission?
Open this lessonWhat does a small p-value actually say?
If p is about 0.04, does that mean the new method has a 96% chance of being better?
Open this lessonExamine the tools as well as the evidence
Does a high score
make an answer trustworthy?
In an executed rule test, 80 pairs of correct and incorrect answers received identical scores. The inputs, outputs and method show what the checker catches and what it misses.
Research status and limitations
Two-person review has not started
These results are software tests on synthetic material. Twenty calibration fixtures and a review workbench are ready. There is no human agreement result. These tests do not establish learning effectiveness.
View calibration materialAn independent site built through practice
Fineuralab has one maintainer. Courses provide practice, tools support tasks, and research records examine the methods. Specific feedback helps improve all three.