About

I'm Colin Rooney, an ML engineer in Denver and founder of ROONEY Tech. My work connects robotics, gait and movement sensing, iOS and wearable software, video pipelines, and agent-assisted development. This site is where I explain the work and the evidence behind it.

The name

“Vague, but exciting…” was Mike Sendall's margin note on Tim Berners-Lee's 1989 proposal at CERN for what became the World Wide Web. It captures a familiar stage of engineering: an idea looks promising before its limits are understood.

These notes are written from inside that process, while the questions and useful failures are still fresh.

Evidence and ownership

I try to make the basis of a claim visible: what I observed as an operator, what a log or instrument measured, what an offline test showed, and what remains an interpretation. Those kinds of evidence answer different questions. A passing software check, for example, does not by itself establish behavior on a physical robot.

Results belong to the build, setup, dates, and conditions actually tested. Dated updates and corrections matter when tools change or a better measurement changes the conclusion. First-hand accounts and second-hand sources should be distinguishable; uncertainty belongs in the explanation.

The work is AI-assisted and human-owned. I use coding agents for implementation, analysis, and writing support. I remain responsible for the engineering decisions and what I choose to publish; that does not mean every claim has been independently verified. The article should say what evidence supports it and where it falls short.

Found an error, or want to discuss the work? Contact details are here.