• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Chapter 9. Designing for Pleasure > Precision, Not Accuracy

Precision, Not Accuracy

As a design tool, it is more important that a persona be precise than accurate. That is, it is more important to define the persona in great and specific detail than that the persona be the precisely correct one. This truth is surprising because it is the antithesis of the goal of interaction design, in which accuracy is always more important than precision. The end result is to have a program that does the right thing, and we are willing to accept some friction in the system to obtain it.

In mechanical devices, moving linkages must be without slack. That is, a piston must move with minimal tolerances in its cylinder. If there were play in the linkage, the piston would quickly slap itself into self-destruction. It matters less that the piston is too short or too long for the cylinder than that it fits without looseness. The same is true of personas. It matters more that the persona is expressed with sufficient precision that it cannot wiggle under the pressure of development than it does that it be the right one.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint