About (O)Ratio

(O)Ratio follows artificial intelligence as it meets the law: the cases that test settled principles, the questions that have no clear answer yet, and the consequences for everyone who has to work in between.

Who (O)Ratio is for

It is written with Australian legal practitioners and the curious in mind.

The name

Ratio is reason — the ratio decidendi that decides a legal dispute. Oratio is speech. Cicero considered the two inseparable. A language model supplies speech effortlessly; whether reason follows is the part still in parentheses. Hence the (O).

The editor

This site is edited by Matt Lewis SC, a barrister in New South Wales, Australia.

Matt was called to the Bar in England and Wales in 2000 by the Hon. Society of Gray's Inn. In 2009, he was called to the Bar in New South Wales. He was appointed Senior Counsel in 2024.

Matt practises widely in disputes related to private international, media, defamation, breach of confidence and privacy law.

He is based at Level 22 Chambers, Sydney and is also an Associate Tenant at Doughty Street Chambers, London.