Blog
News and essays
The news I cover each Tuesday, the long essays, and the Exoesqueleto Cerebral memos. The whole archive in one feed, with original reasoning and a verifiable source.
The system that was built to protect the client and ended up trapping the professional
In 1913, a Boston lawyer invented the billable hour to protect the client. Today it traps the professional who got faster. The data on how outcome-based pricing is moving.

NewsOpenAI no longer just sells the model: it built its own consulting firm
OpenAI created a consulting firm with USD 4,000 million to redesign how companies work. The message: selling the model is no longer the business. The business is redesigning work.
3 min- Newsletter
⚙️ El biólogo que no sabe Python | Exoesqueleto Cerebral
Sebastian Cocioba es biólogo. Tiene un laboratorio propio de biología vegetal y un problema que cualquier profesional independiente reconoce: el software especializado de su campo…
on Substack - Newsletter
⚙️ Cuándo construir tu herramienta de trabajo | Exoesqueleto Cerebral
Esta semana me llamó la atención lo que publicó un contador japonés que ayuda a otros despachos contables a tomar una decisión que se les repite: comprar el software por…
on Substack
EssayWhen to patch an old asset and when to replace it
My 2014 MacBook couldn't install Sequoia. I patched it in one afternoon and got another year out of it. The same judgment applies to any asset in your practice.
5 min
EssayThinking out loud
This blog is where I build, in public, the system I defend in private. If the reasoning doesn't hold up in writing, it probably doesn't hold up in the operation either.
2 min