Addendum is a publication for thoughtful disagreement. We examine business writing, challenge weak assumptions, surface missing context and extend arguments that deserve a second look.
Featured addendum
Entrepreneurship
In response to The Tim Ferriss Show
Financing labels should follow the mechanics of customer value, cash timing, control, and personal exposure—not define the company before those facts are known.
Latest
Small Business
Responding to GOV.UK
The government page points to useful templates, but it leaves new owners without a route from generic forecasts to sector rules, personal exposure, and cash-timing risk.
Startup Strategy
Responding to Y Combinator
Launch speed, concentrated metrics, and aggressive ambition make sense under some venture conditions, but founders and investors do not carry the same downside.
Growth Strategy
Responding to NFX
Constant motion and data collection can produce a stream of positive-looking tests while hiding false discoveries, customer harm, and evidence that it is time to stop.
How Addendum works
Every piece should make the reader better informed than the original article alone. Disagreement is useful only when it introduces evidence, context, reasoning or a more complete frame.
Explain what the original article actually argues before criticizing it.
Focus on a claim, assumption, omission, framing choice or limitation that can be examined clearly.
An Addendum should extend understanding, not simply score points against another writer.
Why “Addendum”?
We are interested in arguments that are almost right, incomplete in revealing ways, persuasive for the wrong reasons, or simply missing a perspective worth preserving.
