John Lesoine
I build tools that test whether writing deserves to be believed. Since 2012 I've been a systems engineer in semiconductor metrology, building machines whose entire job is to report numbers you can trust. Sentences deserve the same test.
Book
Building Systems with AI
How to Use Skills Like Party Planning to Ship Projects People Actually Use
Teaching non-developers to build real, working AI systems — orchestration, not coding, is the skill. Out now on Amazon.
Now
- Engineering Persuasion — believability audits of sales copy: line-by-line verdicts on truth, detail, and respect.
- Believability — an iPhone app that runs the same three checks on any copy you paste or share to it, on-device. In development.
Writing
Long-form on Substack · shorter and rougher on X · the book's one-page checklist is free.
Contact
john@johnlesoine.com — email works; I read it.