learn-visual-storytelling-with-phoebe / Session 3 of 6
Learn Visual Storytelling with Phoebe · Session 3 of 6

One idea per visual

This is the rule everybody agrees with and almost nobody follows, and the reason is not ignorance. A slide with one idea on it looks thin, and looking thin feels like looking lazy in front of people who are judging whether you did enough work. Tonight we deal with that directly, then do the mechanical part: the takeaway title, the second idea's new home, and the split.

🟠 Hands-on Bring your busiest slide Titles rewritten tonight 45 min
0-3 · Welcome 3-18 · The takeaway title and the split 18-40 · Build-along: split the busiest slide 40-45 · Q&A
Part 0

Where we are

The skeleton from session 2 says what each slide is for. Tonight is about making each slide do only that, which turns out to be a question about confidence at least as much as about design.

🎫 Clear all three quiz questions to stamp your passport Live = presented in the 45 minutes Self-study = the full depth, after class

★ What you walk out with tonight. Every title in one deck rewritten as a takeaway, your busiest slide split into the two slides it always was, and a written home for every idea you removed.

Part 1 · covers the takeaway title

The title is where the idea goes

7 min live

A slide title is the most valuable line in the deck and it is almost always spent on a filing label. Rewriting titles is the cheapest change in this whole course and the one with the largest measurable effect on what a reader takes away.

LABEL most decks "Churn by cohort" Names the contents. The reader must read the chart, form a view, and hope it matches yours. DESCRIPTION "Churn varies significantly across cohorts" Better - it has a verb. But "significantly" is an adjective where a number belongs, and it still leaves the reader to work out which cohort matters. TAKEAWAY what to do "Guji is the only cohort above 5 percent, at 12.4" The reader knows the point before looking at the chart, and then uses the chart to check you. That is the correct job for a chart in a persuasive document.
🔍 Click to zoom - the chart is identical in all three. Only the title changed

That seeded title is a filing label with a date range bolted on. It tells you where the slide came from, which is useful when you are searching your drive and useless when somebody is deciding something. The takeaway version is barely longer and does the reader's work: "Guji is the only cohort above 5 percent, at 12.4".

LiveFour rules for a takeaway title4 min▶
  • It has a verb. "Churn by cohort" has none, which is the giveaway. A title without a verb is a filename.
  • It has the number. Not "significantly higher" - 12.4 against 4.1. The adjective is where authors hide when they have not decided how big the effect is.
  • It survives without the chart. Read only the titles of your deck, in order. If they do not tell the story on their own, the deck does not have one - it has slides.
  • It states your reading, not the data's contents. This feels like overstepping the first few times. It is not: an unlabelled chart does not stay neutral, it just delegates the interpretation to whoever is looking, and they interpret it in the meeting, out loud, at length.

The titles-only test is worth doing tonight on a deck you already sent. Copy every title into a list and read it. Most people find their deck says nothing at all, or says three unrelated things.

Part 2 · covers the split

The busiest slide is two slides refusing to separate

7 min live

When a slide carries two ideas, the reader does not absorb both at half strength. They pick one, usually the one that is visually loudest rather than the one that matters, and the second idea is simply lost.

One slide, two ideas The reader takes one of them. Usually the louder one, not the important one. The second idea's four homes 1 · Its own slide, if it supports the claim 2 · The appendix, if somebody will ask 3 · A follow-up email, if it is a different claim 4 · Deleted, if neither of those is true Option 4 is the most common correct answer, and the least popular. The test: cover the title and ask somebody what the slide says. If they name two things, or hesitate between two things, it is two slides. If they name the wrong one, the emphasis is wrong - that is session 4.
🔍 Click to zoom - the second idea always goes somewhere. Choosing where is the work
LiveThe fear of looking thin, taken seriously4 min▶

This objection is usually dismissed and it should not be. The concern is real: in many organisations, volume of output is read as evidence of effort, and a three-slide deck after three weeks of work invites the question.

  • The fear is about the wrong audience. A decision-maker is not counting your slides. The person who might be is your own manager, and the fix for them is a different conversation, not a padded deck.
  • Volume is a bad proxy and everybody knows it. Nobody has ever left a meeting impressed by slide count. They leave impressed by somebody who knew exactly which three things mattered.
  • The appendix exists for this. Put the work behind the deck. "There are eleven more slides in the appendix if you want the cohort breakdown" does more for your credibility than eleven slides in the main deck ever will.
  • Confidence is the actual signal. A short deck presented by somebody who can answer anything reads as mastery. A long deck reads as somebody who could not decide what mattered, which is exactly what it is.
Self-studyThree overloads and what each one actually is4 min▶
  • Two findings on one chart. "Revenue grew and margin fell." Two claims, two slides, and probably two charts - a dual axis is how people avoid admitting this, which is why learn-dataviz-with-phoebe refuses them outright.
  • A finding plus its methodology. The finding goes on the slide, the methodology goes in a one-line provenance note or the appendix. Nobody has ever been persuaded by a method box, and its presence signals you expect to be doubted.
  • A finding plus every caveat. One caveat that changes the decision belongs on the slide. Four caveats that do not belong in the appendix, and putting them all up front reads as hedging rather than as rigour.

All three come from the same instinct: including something so that nobody can say you left it out. That is defending yourself, not communicating, and the audience can tell which one they are watching.

Build-along

Split the busiest slide, rewrite every title

★ 22 min · everyone edits

Two exercises. The titles are mechanical and fast. The split is uncomfortable and slow, and that discomfort is the thing being taught.

List the titles. Copy every slide title from one real deck into a plain list. Nothing else, no charts.

Rewrite as takeaways. Verb, number, your reading. Aim for under twelve words. Do all of them before evaluating any of them.

Read them alone, in order, as a paragraph. Does it tell the story? Most decks fail here, and the failure is informative: it is usually the same slides that had no takeaway to write.

Find the two ideas. Take your busiest slide. Cover the title. Ask a neighbour what it says. Count how many things they name.

Rehome the second. Own slide, appendix, email, or deleted. Write down which, for each thing you removed. The written record is what stops it creeping back in on Thursday.

Do all the titles before judging any. Rewriting one title well takes ninety seconds. Agonising over the first one takes twenty minutes and you never reach the rest.

If a slide has no takeaway you can write, that is the finding. The slide is there because you had the data, not because it says anything.

Use a neighbour for the cover-the-title test. You cannot run it on yourself - you already know what the slide is supposed to say, which is precisely what the test removes.

Write the rehoming decision down. "Cohort breakdown to appendix, margin trend to a separate email to Priya." Four words each. Without this, everything drifts back.

Count your slides before and after. Splitting adds slides while rehoming removes more. Net is usually down by a third, and the deck reads faster despite having a similar count.

If you take one thing from tonight. Read your deck's titles as a list, with no charts. Ten seconds, and it tells you whether you have a story or a folder.

Homework

Before session 4

25 min
  1. Run the titles-only test on three decks, including one you received. Note which ones tell a story from titles alone.
  2. Split two more overloaded slides and record where each removed idea went.
  3. Build an appendix for one deck, and practise the sentence "that is in the appendix, slide fourteen" out loud. It is a surprisingly powerful thing to be able to say.
  4. Find a slide where the reader looks at the wrong thing first. Bring it to session 4 - that is an emphasis problem, and it is next.
Check yourself

Three questions

Clear all three and session 3 gets stamped in your passport.

1 · What is the strongest argument for a takeaway title over a neutral one, given that stating your reading feels like overstepping?

Neutrality is the illusion. Somebody is going to interpret the chart, and the only question is whether it is you in writing beforehand or the room in real time. Stating your reading also makes you accountable to it, which is the honest version of the accusation that it is overstepping.

2 · You cover the title of a slide and a colleague names two different things it says. What does that tell you?

Two ideas on one slide do not arrive at half strength each. One wins on visual volume and the other is lost. Restoring the title papers over it: the title would then be asserting one idea while the slide shows two, which makes the mismatch invisible rather than fixing it.

3 · A three-week analysis has produced a three-slide deck and you are worried it looks thin. What is the right response?

The concern is real and B dismisses it too easily. The fix is to relocate the work rather than delete it or display it: the appendix makes the depth available on demand, which is more persuasive than the same material forced on everyone. C is padding with extra steps and the room can tell.

Sources covered

What this session teaches, and where it came from

✓Label, description, takeawayThree title kinds on an identical chart, and what each leaves the reader to do
✓Four rules for a takeawayA verb, the number, survives without the chart, states your reading rather than the contents
✓The titles-only testRead the titles as a paragraph. Most decks discover here that they are a folder
✓The second idea's four homesOwn slide, appendix, follow-up email, or deleted - and deleted is the most common right answer
✓The fear of looking thinTaken seriously rather than dismissed: wrong audience, bad proxy, and what the appendix is for
◐Cognitive load theoryNamed as the mechanism behind the split, without turning the session into a psychology lecture

Every fact on this page, and its verification tier, is recorded in the course's source map.

Session 3 cheat sheet · pin this

Title carries the ideaA verb and a number, under twelve words.
Titles-only testRead them alone. Story, or folder?
Cover the titleIf they name two things, it is two slides.
Four homesSlide, appendix, email, deleted.
Thin is not the riskUndecided is. The appendix carries the depth.
No takeaway to write?The slide exists because you had the data.