Minor Does not disturb the most relevant usecases. Ability to work around automatically or semiautomatically
Very Mild
Very light barely noticeable pain, like a log entry with a warning that does not effect operation.
Most of the time you never think about the pain.
2
Discomforting
Minor pain, like having to click on a warning message and ignore it or fixing an entry manually to continue.
Note that people react differently to this behavior of the system.
3
Tolerable
Very noticeable pain, like a login that has to be entered before each operation.
The pain is not so strong that you cannot get used to it. Eventually, most of the time you don’t notice the pain. You have adapted to it.
4
Moderate Interferes with many usecases.
Requires organizational changes but the system is still somewhat useful.
Unable to ignore pain.
Distressing
Strong, deep pain, like a regular failure of a system function needing to restart the function and carefully avoid the circumstances leading to the issue.
So strong you notice the pain all the time and cannot completely adapt.
5
Very Distressing
Strong, deep, piercing pain, such as a regular system outage.
6
Intense
7
Severe Unable to use system effectively.
Relevant system functions have major quality defects. System needs to be fixed to continue to perform. Organizational activity is focussed on repair of the system instead of
the user needs fullfiled by the usecases.
Very Intense
8
Utterly Horrible
9
Excruciating Unbearable
10
Showstopper
If the problem is not solved the system can not perform at all.