Explanation of the First Principles Set Applied to the Tool

  • negentropic tool
  • tool of least resistance
  • invisible tool
  • lowest possible metabolic cost per information
  • minimal movement and time
  • most productive applications within the field of view
  • working memory capacity => 7 applications
  • reduction of variation in choices and displayed data
  • complexity shifted to the back-end
  • federated identity removes password friction
Hick's Law (Selection Speed) "The time it takes to make a decision increases logarithmically with the number of choices."
$$RT = a + b \cdot \log_2(n)$$

RT: Reaction Time, n: Number of options
a, b: Constants of user proficiency/training
Fitts's Law (Clicking Speed) "The time required to move to a target depends on the distance to the target and its size."
Relates to how large and how close control elements are positioned.
➔ This results in selecting the most productive application and secondary essential tools.