Ecuador's electronic invoicing spec: the obligation lives in the annexes Not a book: the document you must read end to end to issue electronic invoices in Ecuador. Twenty-six annexes, thirty-four accumulated versions, and a new requirement that will catch many issuers by surprise. Craft 10 feb 2026 Books
English for Academic Research: ambiguity is a defect, not a style Written for researchers publishing in a language that is not their own. Its best lesson is not linguistic: a sentence without a subject is the exact spot where nobody ends up accountable. Craft 28 ene 2026 Books
English Grammar in Use: grammar is looked up, not studied A hundred and forty-five two-page units: explanation on the left, exercises on the right. The format is the idea, and it is also the limit. Craft 25 ene 2026 Books
Engineering Mathematics with MATLAB: a lookup table with a licence attached Linear algebra, differential equations, Fourier, complex variables and probability, each topic paired with the command that solves it. It is a reference work, and the cost of using it should be said out loud. Craft 22 ene 2026 Books
A project methodology built on Gemini and Canvas: no author, one idea Five units on developing software with a large context window. No author, no publisher, machine-translated. There is one usable idea and a lot of padding around it. AI Craft 19 ene 2026 Books
The Obstacle Is the Way: packaged stoicism, thin inside Three parts: perception, action, will. An old and good idea wrapped in anecdotes chosen to fit it. I kept one operating rule and returned the rest. Craft 16 ene 2026 Books
Man and His Symbols: why I do not delete the step nobody can explain The only book Jung wrote for a general audience. I took exactly one idea from it, and it is the one I use whenever a process walkthrough turns up a step nobody can justify. Craft 10 ene 2026 Books
Don't Make Me Think: people scan, they do not read A short usability classic. It left me a test I run on every page, and a disagreement with its central idea, which works beautifully for buying and rather badly for deciding. Craft 4 ene 2026 Books
Designing AI Interfaces: the empty text box is lying A design book for people shipping AI features. Its best idea is that a blank box implies the conversation starts fresh, while the system has already loaded half a dozen things the user cannot see. AI Craft 16 dic 2025 Books
A Spanish compendium of logic, argumentation and rhetoric: a dictionary for project arguments Seven hundred pages of alphabetical entries, each signed by a different specialist. You do not read it: you consult it when you need to name what just happened in a meeting. Craft 27 nov 2025 Books
Building Claude Skills: a hundred pages, one idea, and that is fine A slim book about turning repeated work into reusable instructions. The idea is old and good; the packaging is product-shaped and perishable. What is worth keeping fits in one chapter. AI Craft 15 nov 2025 Books
Biostatistics with Python: read from outside medicine Applied biostatistics, with clinical studies, survival analysis and meta-analysis. Not my field, and that is exactly why it left me the questions a field with serious consequences learned to ask before claiming anything. Craft 6 nov 2025 Books