Urban · #15 of 26
Residential building doorman
Receives packages, controls the entrance, knows everything about every resident. A job that in many countries became an intercom.
Jabuticaba Index®
77%
Plausibility range: 77%
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
Staff member who controls access to residential buildings full time.
02Context
The job exists in few countries with the same frequency [1].
03Where else it exists
- Local presence(Marginal → Widespread)
- Exported from Brazil(Marginal → Widespread)
- Brazil
- Absent (checked)
- No data
Equal Earth projection. Places with uncertain presence take the color of the highest possible level; the table shows the full range.
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.
- 3.1
- Exclusivity E
From 0 (exists everywhere) to 1 (only in Brazil), on a log scale.
- 0.69
- Intensity I
How much more common it is in Brazil than in the other places where it exists.
Present in most middle-class buildings in big cities (fictional data). [1]
- 2 of 4
- Rarity coefficient R
R = E + 0.5 × (I ÷ 4) × (1 − E)
R = 0.69 + 0.5 × (2 ÷ 4) × (1 − 0.69) = 0.77
- 0.77
- Jabuticaba Index®
- 77%
Not part of the score
How aware Brazilians are that this is rare abroad.
Rarely perceived as unusual. editorial judgment
1 of 4
05Sources
- [1]
A. Nonymous, P. Laceholder. A Global Survey of Allegedly Unique Things
University of Nowhere Press · Jun 2024 · Academic
example.org/fictional-survey · accessed Sep 25, 2026
Last reviewed Sep 25, 2026 · Methodology v0.2