# hand (1-hand.org)

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.

## What a model may hear
- 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

## Where people and models part ways
- Says: "Give me a hand with this"
  Means: Help me with a task
  May be taken as: Generate an image of a literal hand, or analyze hand geometry
  Say instead: "Help me with this task"
- Says: "I need a second hand"
  Means: I need more help or another person
  May be taken as: Search for clock-related data, video timestamps, or two-handed gesture recognition
  Say instead: "I need more help with this"
- Says: "On the other hand"
  Means: Considering a different viewpoint
  May be taken as: Switch to hand-related computer vision tasks or gesture analysis
  Say instead: "Alternatively, or considering the opposite view"

## Tips
- Say 'help me' instead of 'give me a hand' to avoid literal interpretation
- Use 'manually created' instead of 'hand-crafted' when describing human-made content
- Specify 'human assistance' rather than 'a hand' when you want collaborative help
- Say 'transfer' or 'pass' instead of 'hand off' when describing data or task movement
- Use 'in contrast' or 'alternatively' instead of 'on the other hand' in analytical contexts

## Often 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