Crux

A studio for clearer seeing

Crux

Most thinking tools help you argue. Crux helps you update. Stake a prior. Take the other vantage. Leave with a posterior, a crux, and a record.

01

Stake a prior

Say how sure you are before you look. Otherwise the report will write the number for you.

02

Steel, then object

The strongest version of the other side first. Cheap objections are a kind of hiding.

03

Name the crux

The observation that would actually change a mind. If you cannot name it, you are not arguing — you are identifying.

Today on the range

Sound travels faster in water than in air.

Assign a probability. Then find out.

A trap, waiting

What comes to mind

The mind samples headlines, not base rates.

The arithmetic

A 99% accurate test on a 1% condition.

The posterior writes itself. It is not 99.

Try an assay

The first principle is that you must not fool yourself — and you are the easiest person to fool.

Richard Feynman