Urban · #8 of 26

Window safety nets

Every apartment window with a cat or a child gets a net. Elsewhere, apparently, people trust gravity.

Fictional dataHidden jabuticabaMachine translation, not yet reviewed.

Jabuticaba Index®

89%

Plausibility range: 88–90%

Evidence grade. Computed from source types: from A (official and academic data) to D (editorial judgment). It does not change the index.

01What exactly is being measured

Nylon nets installed on apartment windows and balconies to prevent children and pets from falling.

Installing them is considered a basic step when moving house ^[1].

Abroad, the habit shows up in a few big cities ^[2].

SovereignColonial

Equal Earth projection. Places with uncertain presence take the color of the highest possible level; the table shows the full range.

Place (3)

Place	Presence	Weight	Sources
Argentina	Regional	0.5	[2]
China	Regional	0.5	[2]
Chile	Marginal	0.1	[2]
Presence abroad		1.1

Place	Presence	Sources
São PauloBR-SP	Widespread	[1]
Rio de JaneiroBR-RJ	Widespread	[1]
Minas GeraisBR-MG	Widespread	[1]
ParanáBR-PR	Regional	[1]
AmazonasBR-AM Less common in cities with fewer tall buildings.	Marginal	[1]
ParáBR-PA	Marginal	[1]

Presence abroad Sum of each place's weight: widespread = 1, regional = 0.5, marginal = 0.1. Where it only exists as a Brazilian export, the weight is multiplied by 0.5.: 1.1
Exclusivity E From 0 (exists everywhere) to 1 (only in Brazil), on a log scale.: 0.84
Intensity I How much more common it is in Brazil than in the other places where it exists. Nationwide presence in large cities; abroad, in niches. [1]: 2–3 of 4
Rarity coefficient R R = E + 0.5 × (I ÷ 4) × (1 − E) R = 0.84 + 0.5 × (2.5 ÷ 4) × (1 − 0.84) = 0.89: 0.89
Jabuticaba Index®: 89% (88–90%)

Not part of the score

AwarenessHidden jabuticaba

How aware Brazilians are that this is rare abroad.

Almost no Brazilian knows this is unusual. editorial judgment

0 of 4

[1]
Censo Imaginário de Coisas Brasileiras 2025
Instituto Brasileiro de Geografia Imaginária · 2025 · Statistical data · in Portuguese
example.org/fictional-census · accessed Sep 25, 2026
[2]
Brazilians Surprised Again
The Example Gazette · Jan 15, 2026 · News
example.org/fictional-gazette · accessed Sep 25, 2026

Last reviewed Sep 25, 2026 · Methodology v0.2