Life Expectancy at Birth

The dumbbell is built around one job — make the male–female gap legible — and the framework largely rewards it, with a single honest compromise it discloses rather than hides.

Purpose & audience. It answers one sharp question: how wide is the life-expectancy gap between women and men in each country, and who has the widest? The “sort by sex gap” control makes that the headline rather than an afterthought, and a general reader can act on it at a glance — the Baltics fan open, the Mediterranean countries close ranks. Honesty & completeness. Every country and both sexes are shown, the EU-27 reference is marked, and hovering reveals the exact figures. The one compromise is the truncated x-axis (starting at 68, not zero), which is needed to make a five-year gap visible at all but does compress the distance between countries — so the redesign discloses it in a caption and points readers to the diverging chart for honest cross-country comparison, rather than letting the truncation mislead in silence. Encoding & chart choice. The gap is encoded as length along a common position axis — the most accurate, pre-attentive channel there is — instead of the original’s flame area. Two countries’ gaps compare directly by the length of the connector, and the direction (women always longer-lived) is consistent and instantly readable.

Clarity over decoration. The ink is minimal and every mark earns its place: two dots, a connector, and one gap label per row. The only extra mark, the grey “both sexes” diamond, carries a genuine third value — the country aggregate — rather than ornament. No 3-D, no heavy gridlines, no chart junk. Colour & accessibility. Male and female are separated by colour and shape together — a teal circle versus a magenta square — and the legend mirrors those shapes, so the chart survives colour-vision deficiency without leaning on hue alone. The EU-27 line is a distinct dashed highlight rather than a fourth competing colour. Layout & flow. Rows sort top-to-bottom by whichever metric is active, the EU-27 row is banded as the anchor, and the interactivity is pitched correctly — drill-able on hover for exact values, but never so busy that the static view stops working. The sort toggle reframes the same data without adding clutter.

The honest verdict: it does the one thing it sets out to do well, and is candid about the single distortion it accepts to do it. Its real limit is scope — it is the right tool for the sex gap and the wrong one for ranking countries by absolute longevity, which is exactly the gap the diverging chart fills.

The diverging bar trades breadth for an honest, single-question answer: which countries sit above or below the EU average, and by how much. On the framework it is the cleaner of the two redesigns, with one deliberate omission.

Purpose & audience. It answers one question and only one — how does each country compare to the EU-27 average, and by how many years? For a reader placing their own country against the European norm the answer is immediate: green to the right is above average, orange to the left is below, and length is the size of the difference. Honesty & completeness. This is where it most outperforms the original. The baseline is the EU-27 average — a meaningful zero rather than a truncation — so bar length is the true deviation and nothing is visually exaggerated. The EU row itself is excluded because it is the baseline, not a competing bar, and every value is labelled. There is no second story the numbers could tell if plotted more fairly. Encoding & chart choice. Deviation is encoded as bar length from a fixed origin, and the all-important direction (above or below the norm) is carried redundantly by both position (left/right of zero) and colour — so the key split reads in a single glance and never depends on colour alone.

Clarity over decoration. Bars, one value label each, and one baseline annotation — nothing more. No gridline clutter, no borders, no 3-D, no decorative motif. The data-ink ratio is high and the form is entirely in service of the comparison. Colour & accessibility. Green for above and orange for below is a reasonably colour-blind-safe divergence, and it is reinforced by left/right position, so the meaning survives even if the hues are indistinguishable. The honest caveat the framework surfaces is not the palette but completeness: by collapsing to a single both-sexes figure, this view deliberately sets aside the male/female split that the dumbbell exists to show. Layout & flow. Sorted longest-first, the extremes anchor the top and bottom and the eye travels down through the ranking to the EU baseline in the middle. The interactivity is view-only with hover detail — exactly right for a ranking, where drill-down would add noise rather than insight.

The honest verdict: as a cross-country comparison it is rigorous and hard to misread, the mirror image of the dumbbell’s strength. Its one real cost is the male/female detail it sets aside — which is why the two redesigns are shown together rather than as competitors: each answers cleanly the question the other has to mute.