Why is zero plural? (2024)

Original Article ↗ Hacker News Discussion ↗

Core question: zero and plurality in English

  • Thread centers on why English uses plural after zero (“0 books”) but singular after 1 (“1 book”).
  • Several commenters note a simple rule-of-thumb: in English grammar “singular” effectively means “exactly 1”; any other number, including 0, patterns as plural.
  • Some argue it’s less about number theory and more about long‑established idiomatic patterns that users now treat as rules.

Role of “no” and negation

  • Many tie “zero X” to “no X”: “zero books” behaves like “no books,” which is overwhelmingly plural in common phrases (“no legs,” “no stars,” etc.).
  • Singular with “no” can work but usually requires special context or sounds marked/archaic (“no book on this subject” ≈ “not even one book”).
  • Distinction often reflects expectation: singular when only one is normally expected (“no steering wheel”), plural when many are expected (“no trees,” “no spoons”).

Decimals, negatives, and units

  • Discussion over whether “1.0” should be grammatically singular: most treat 1.0 as “one,” but measurements can push toward plural (“1 litre” vs “1.0 litres”).
  • Some languages (e.g., Portuguese, per commenters) treat numbers in (–2, 2) as singular, regardless of sign or fraction.
  • Units and countability matter: mass nouns use “no water” not “zero waters,” while count nouns use “zero oranges.”

Cross‑linguistic contrasts

  • Examples from French, Hindi, Turkish, Hebrew, Russian, Serbo‑Croatian, Polish, Romanian, Greek, Portuguese, Chinese, and others show wide variation.
  • Some languages treat zero as singular (French, Portuguese), others as plural (Russian, Polish), others ignore plurality after numerals (Turkish, Irish).
  • Slavic languages highlighted for complex number systems (singular, paucal, plural) where zero patterns with the “many” form.
  • Some languages count with singular nouns but use plural elsewhere; some have dual or paucal forms; Chinese largely lacks grammatical plural in the Indo‑European sense.

Grammar vs usage, aesthetics, and change

  • Repeated theme: “correctness” follows native usage, not logic; explanations are often post‑hoc.
  • Some suggest phrases survive because they “sound nicer” or fit existing phonological patterns, with rules inferred later.
  • Debate over prescriptive sources (academies vs education ministries vs actual usage) and frustration with highly upvoted but linguistically weak answers on Q&A sites.