##Single-word description I am interested in finding a single noun that means "the property of having limited or no assumptions". I could also use a noun meaning "the property of having some level of assumption" or "the property of having some level of pre-imposed knowledge".

##The sentence I am looking to complete:

The design of the system must balance three forces -- simplicity, robustness, and [assumptivity; assumptiveness].

simplicity -- the level of ease or amount of work to describe or understand

robustness -- the ability to perform well under a variety of cases

##Words I have considered:

• Assumptivity
• Assumptiveness
• Imposivity
• Impositionness

These don't feel well-formed.