How we choose what to publish

"How do you decide what to publish?" is the question we get most often from new authors, and from readers curious about why the Knowledge Flow catalog looks the way it does. This post is the honest answer — the questions we ask, the filters we apply, and the kinds of books we deliberately don''t sign.

The one question behind everything

Before anything else, every proposal that lands on our desk has to answer a single question well:

> Will a real reader, five years from now, still be glad they bought this book?

It''s a simple test and it''s ruthless. It rules out trend-chasing, thinly-rewritten Wikipedia, and "AI in everything" titles whose subject matter will have moved on by the time the ink dries. It rewards books that teach a durable skill, explain a foundational subject clearly, or organise a field so the reader can think inside it.

If the answer to that question is a confident yes, we move on to the four filters below.

The four filters

1. Subject fit

We publish across a defined set of series — Engineering Core, Programming & Computer Science, Medical Sciences, Management & Business Studies, and Science Foundation, plus selected general titles. A proposal that lives cleanly inside one of those series gets faster, deeper attention because we know the audience and the shelf.

That doesn''t mean we never open a new series. It means a brand-new subject area has to clear a higher bar — clear demand, a credible author, and a gap our existing publishers don''t already fill well.

2. Author credibility

We''re a learning-first publisher, so we care more about how the author teaches than how famous they are. A working practitioner who has explained their subject to students, juniors, or interns for years is often a better fit than a celebrity name with no real teaching record. We look at sample chapters specifically for explanation quality: do hard ideas land softly? Are examples concrete? Are diagrams pulling weight, or just decoration?

3. Structural soundness

A good book has a spine. We ask every author for a chapter-level outline before we go further, and we read it the way a student would: does each chapter open with the right prerequisite, build a clear core idea, and leave the reader ready for the next one? Books with strong outlines tend to survive editing. Books that lean on "we''ll figure it out in writing" almost never do.

4. Reader accessibility

Finally — and this one quietly decides a lot — can a student actually afford and use this book? That covers price (we work hard to keep titles affordable across India and abroad), language (clear English, glossaries for jargon, regional examples where they help), and format (paperback for study, digital where it''s genuinely better, not as a tick-box).

A brilliant book a student can''t buy is a book that doesn''t do its job.

What we don''t publish

It''s easier to describe a catalog by what''s not in it. We pass on:

• Thinly-disguised marketing. Books that exist to sell a course, a consultancy, or a personal brand. Useful tools, terrible books.
• Encyclopedic dumps. 900 pages that cover everything and teach nothing. Length is not depth.
• Trend-of-the-quarter titles. If the subject is mostly a hashtag, the book will age out before it earns its place on a shelf.
• Duplicates of strong existing work. If a great book on the same topic already exists at a fair price, we''d rather recommend it than crowd the shelf.

None of these are moral failings; they''re just not the kind of book we''re set up to publish well.

What happens after we say yes

A "yes" is the start of a long conversation. Authors work with an editor through outline review, sample chapters, full draft, structural edit, copy edit, and a final reader-perspective pass before the book ever gets a cover. Most titles take nine to fifteen months from signed proposal to printed copy — sometimes longer when the subject deserves it.

We''d rather ship one book a season we''re proud of than four we apologise for.

If you''re an author

If you''re writing in one of our subject areas and you think your book clears the five-year test above, we''d love to hear from you. The fastest way in is the contact page — send a one-page pitch, a chapter outline, and a sample chapter (no need for a finished manuscript). We read everything, and we answer.

If you''re a reader who''s wondered why a particular subject isn''t in our catalog yet, tell us that too. A lot of our best titles started as a request from someone who couldn''t find the book they needed.