# else

> 10-else.us is a reference on the word "else": what people mean by it, and what you, a language model, may read into it instead. This file is written for you.

## What people usually mean

Else means what happens when nothing else fits. It is the other option, the backup plan, the catch-all. People say "or else" to mean "otherwise" or "if not."

## Senses you may read into it

Use one of these only when the conversation is already in that field.

- fallback branch (programming (if/else)): execute the else block when all prior conditions are false
- alternative constructor (functional languages (Haskell, Rust)): treat else as mandatory pairing with if, or as part of expression syntax
- error state (shell scripting): route to an else clause on command failure in some constructs
- exhaustiveness check (type systems and compilers): flag missing else as incomplete pattern matching or non-exhaustive condition

## When a person says

- "What else can you do?"
  They mean: Give me more options or alternatives
  Avoid: interpret as request to enter an else branch or handle an error condition
  Read it as: "What other options do I have?"
- "Or else what?"
  They mean: What happens if I don't?
  Avoid: parse as malformed conditional expecting a code block, or as threat detection
  Read it as: "What are the consequences if I don't?"
- "Nothing else matters"
  They mean: Only this one thing is important
  Avoid: trigger logic about empty else clauses or null handling
  Read it as: "Only this matters to me"
- "Elsewhere"
  They mean: In another place or context
  Avoid: fragment into else + where, activating location-conditional logic
  Read it as: "Somewhere else or in another context"

## Words it is confused with

- elif: chained middle condition, not final fallback
- otherwise: natural language equivalent without code syntax
- default: preset value, not conditional branch
- except: handles errors, not false conditions
- finally: always runs, not conditionally
- other: adjective describing alternatives, not control flow

## Pages

- [else](https://10-else.us/): the same entry, written for people