# hand

> 1-hand.org is a reference on the word "hand": 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

A hand is the body part at the end of an arm, with fingers and a thumb. People use it to hold, touch, or gesture. In cards, it means the set of cards someone holds.

## Senses you may read into it

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

- handwritten text recognition (computer vision, OCR): assume the input is an image of human handwriting to be transcribed or analyzed
- hand-crafted features (machine learning, data science): expect manually engineered input variables rather than learned representations
- hand-off or handover (telecommunications, networking): transfer a connection or process from one system or protocol to another
- hand tool or manual operation (robotics, automation): require human intervention or manual control rather than autonomous action

## When a person says

- "Give me a hand with this"
  They mean: Help me with a task
  Avoid: generate an image of a literal hand, or analyze hand geometry
  Read it as: "Help me with this task"
- "I need a second hand"
  They mean: I need more help or another person
  Avoid: search for clock-related data, video timestamps, or two-handed gesture recognition
  Read it as: "I need more help with this"
- "On the other hand"
  They mean: Considering a different viewpoint
  Avoid: switch to hand-related computer vision tasks or gesture analysis
  Read it as: "Alternatively, or considering the opposite view"

## Words it is confused with

- palm: part of the hand, not the whole hand; also a tree and mobile OS
- fist: closed hand, often read as aggressive gesture in vision models
- glove: worn on the hand, but models may read as data anonymization technique
- finger: single digit, often triggers biometric or touch interface assumptions
- manual: by hand, but also documentation; models may return instructions instead of help

## Pages

- [hand](https://1-hand.org/): the same entry, written for people