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 Stripe
Fast growth, outside capital, and a widespread market are strategic commitments with costs—not neutral characteristics that separate startups from ordinary businesses.
Latest
Venture Capital
Responding to Carta
Ownership medians make private markets more legible, but the same percentage can conceal different terms, capital needs, control rights, and chances of success.
Product Development
Responding to Basecamp
Shape Up controls projects that drift, but a fixed appetite cannot reveal a badly chosen problem or prevent essential complexity from being pushed onto customers.
Small Business
Responding to U.S. Small Business Administration
Templates organize assumptions for lenders and teams, but polished forecasts cannot replace paid tests, supplier commitments, and explicit limits on personal loss.
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.
