"hidden assumption" is certainly correct and usable in written English.
You can use it in any context where you want to refer to an underlying assumption that may be influencing someone's thoughts or actions. For example, "The speaker's arguments rely on a hidden assumption that their audience agrees with them."
In essence, the fact that housing prices would always rise was a hidden assumption in the models.
There's a hidden assumption in some of this coverage that candidates should be nothing more than advocates for their class.
The hidden assumption lying behind the conception of the welfare state was that full employment was a given – everyone who wanted work could find it.
Even more dangerous is the hidden assumption that the man is somehow entitled to continue with the relationship if he wants to, that he somehow has the right to expect a positive response, if only out of courtesy.
Because it contains a hidden assumption that it is radical ideas, specifically Islamic theological ideas, that are the root cause of turning a young lad from West Yorkshire into an Isis suicide bomber in Iraq.
What is most telling about the quotation, however, is the hidden assumption that decisions about how best to help those at "the bottom of the pyramid" should be settled among policy élites.
Biswas, S. & Wagner, H. Landscape contrast: a solution to hidden assumptions in the metacommunity concept?
This exercise reveals hidden assumptions in the original model about implementation that require refactoring to get a distributed deployment model.
"The sensor revolution will challenge hidden assumptions in a bewildering array of doctrinal fields," writes Kevin Werbach, of the Wharton School of the University of Pennsylvania, in a paper entitled "Sensors and Sensibilities".Lastly, consumers may not play ball.
Clearly, bridge principles do not solve any philosophical questions such as the 'is-ought problem'; nonetheless, they contribute to clarify the problem and to uncover hidden assumptions.
The detail and volume of technical notes on methods and models do nothing to shed light on the arguably more problematic deeper and hidden assumptions and interests that informs the raison d'etre of IFCs.
