--- title: "Nobody reads your 40-slide deck - and that's on you" date: 2026-07-15T00:00:00Z updated: 2026-07-10T19:58:56Z tags: ["PowerPoint", "Communication", "Slide Design", "Meetings", "Stakeholder Management"] canonical: https://bianca.codes/blog/40-slide-deck-hot-take/ --- # Nobody reads your 40-slide deck - and that's on you _A deck that needs 40 slides to make one point didn't run out of room. It ran out of edits._ ## Length is not thoroughness A deck that needs 40 slides to make one point is not being thorough. It is avoiding the work of deciding what the point actually is. Thoroughness is a decision about what matters; forty slides is what happens when you skip that decision and paste in everything instead. ## Why the deck keeps growing Nobody sits down and plans a bloated deck on purpose. It grows one reasonable-sounding addition at a time: a slide for the stakeholder who might ask about Q2, a slide covering the edge case someone flagged in a hallway conversation, a slide of methodology because leadership "likes to see the rigour." Each slide is defensible on its own. The deck becomes indefensible as a whole, and nobody notices, because nobody is looking at the whole thing. They are looking at the slide they just added. Some of this comes from treating the deck as documentation. A deck that also has to survive as a cold read three weeks later is doing two jobs at once: presenting an argument live, and explaining itself with nobody in the room to narrate. That's how a 12-slide argument becomes a 40-slide reference manual with a presenter bolted on. ## Where forty slides actually go wrong The audience checks out first. Attention in a room is not evenly distributed across 40 slides, it front-loads onto the first five and the last two. Everything in between competes for a shrinking amount of attention while getting exactly the same visual weight as the slides that matter. Then the argument gets buried under its own evidence. A title like "Q3 Regional Performance" tells the reader nothing except the topic. By the time they have parsed six sub-bullets to work out whether performance was good or bad, the next slide has already loaded. And the meeting runs long, because a deck built to be read, not delivered, turns into you narrating slides the audience could have read themselves in a tenth of the time. ## The better way Give every slide a title that states the finding, not the topic. "Region West missed target for the third straight quarter" earns its place; "Regional Performance" does not. If a slide's title can't carry the point on its own, the slide isn't finished, it's a container waiting for you to explain it out loud. Then cut anything that exists only to pre-empt a question nobody has asked yet. Put it in an appendix, or in a one-page leave-behind, so the live deck stays an argument instead of a reference document. For the mechanics of a summary slide that updates itself instead of you re-copying numbers every week, the Build It on [wiring a PowerPoint slide straight to your Excel model](/blog/self-updating-powerpoint-summary-slide/) (Jul 7) covers it. ## Frequently Asked Questions ### **Does this apply to decks that are meant to be read, not presented?** Less so, but the discipline still helps. A reference deck can carry more detail because there's no live audience losing attention in real time, but it still benefits from a clear finding in every title. What changes is where the extra detail lives, not whether the point needs to be stated plainly. ### **Is there an actual slide count where a deck becomes "too long"?** No fixed number survives contact with a real meeting. A 10-slide deck can drag if every slide restates the last one, and a 25-slide deck can move fast if each slide earns its place. Count the slides that changed someone's mind, not the slides in the file. ### **What about the 6x6 rule, six bullets and six words each?** That rule treats the symptom, not the cause. It stops a slide from being a wall of text, but it does nothing about a deck that has 40 slides worth of walls-that-aren't-quite-walls. Fix what the deck is arguing before you fix how each slide is formatted. ### **What if leadership explicitly asked for a comprehensive deck?** Ask what they actually want to do with it: approve a decision live, or file it away for later reference. Those are different requests wearing the same word. A comprehensive appendix behind a tight argument satisfies both; forty undifferentiated slides satisfy neither. ### **Where do the cut slides go, straight to the recycle bin?** Into an appendix section at the end of the same file, still there if someone asks, no longer competing for attention during the parts that matter. PowerPoint's Slide Sorter view makes moving them a five-minute drag-and-drop job, not a rewrite. A deck earns its length one slide at a time, and most of yours haven't paid the toll.