Jabuticaba Index®

Categorizing Brazilian singularities. From the capybara to the precatório.

Home#17 of 26Hidden jabuticabaFictional data

Electric shower

Heats the water inches from the bather's head. Considered perfectly normal.

01Where else it exists

Projection
Bolivia: WidespreadBrazilColombia: WidespreadCosta Rica: RegionalEcuador: WidespreadGuatemala: WidespreadHonduras: RegionalMexico: RegionalNicaragua: RegionalPeru: WidespreadEl Salvador: Regional
Bolivia: WidespreadBrazilColombia: WidespreadCosta Rica: RegionalEcuador: WidespreadGuatemala: WidespreadHonduras: RegionalMexico: RegionalNicaragua: RegionalPeru: WidespreadEl Salvador: Regional
  • Local presence(Marginal → Widespread)
  • Exported from Brazil(Marginal → Widespread)
  • Brazil
  • Absent (checked)
  • No data

Sovereign projection: Equal Earth centered on 60° W, south up, as on IBGE's world maps. Colonial projection: Equal Earth. Places with uncertain presence take the color of the highest possible level; the table shows the full range.

Place (10)
PlacePresenceWeightSources
BoliviaWidespread1[1]
ColombiaWidespread1[1]
EcuadorWidespread1[1]
GuatemalaWidespread1[1]
PeruWidespread1[1]
Costa RicaRegional0.5[1]
El SalvadorRegional0.5[1]
HondurasRegional0.5[1]
MexicoRegional0.5[1]
NicaraguaRegional0.5[1]
Presence abroad7.5

02What exactly is being measured

A shower head with an electric heating element that heats water at the point of use, installed as the home's main water heating.

03Context

According to the industry association [1], the device is common in much of Latin America.

In Brazil, however, prevalence is far higher [2].

04How we got this number

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.

7.5
Exclusivity E

From 0 (exists everywhere) to 1 (only in Brazil), on a log scale.

0.54
Intensity I

How much more common it is in Brazil than in the other places where it exists.

Fictional prevalence ratio of 8 times the runner-up. [2]

Prevalence ratio: 8×

3 of 4
Rarity coefficient R

R = E + 0.5 × (I ÷ 4) × (1 − E)

R = 0.54 + 0.5 × (3 ÷ 4) × (1 − 0.54) = 0.71

0.71
Jabuticaba Index®
71%

Not part of the score

AwarenessHidden jabuticaba

How aware Brazilians are that this is rare abroad.

Rarely recognized as a national peculiarity. editorial judgment

0–1 of 4

Evidence grade

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

B

05Sources

  1. [1]

    Relatório Anual da Associação Hipotética

    Associação Brasileira de Coisas Hipotéticas · Nov 2025 · Organization · in Portuguese

    example.org/fictional-association · accessed Sep 25, 2026

  2. [2]

    Censo Imaginário de Coisas Brasileiras 2025

    Instituto Brasileiro de Geografia Imaginária · 2025 · Statistical data · in Portuguese

    example.org/fictional-census · accessed Sep 25, 2026