I disagree.
The ideal application:
- uses no memory
- uses no disk space
- is instant
- costs nothing
- and has all the features in the world
- presented in a manner that automatically shows the user only the exact features (s)he cares about
The real-world application, when the developers work for the customer and not for themselves:
- uses almost no memory
- uses almost no disk space
- is extremely fast
- costs next to nothing
- and has almost all the features in the world
- presented in a manner that automatically shows the user only the exact features (s)he cares about