Fitt's Law

"The time to acquire a target is a function of the proximity and size of the target." - Fitt's Law

This is a generally known principle in physical activity. The larger the target is, and the closer it is to where you start, the easier it is to find. That's not rocket science.

This law can also be applied to interface design.

  • Making the desired task flow clear and prominent will help the user identify the next steps and encourage the appropriate behavior.
  • Making exceptions and tangential information smaller and isolating them will reduce the likelihood of error.