Full Idea
When supporters of truth-making talk of 'something' which makes a sentence true, they make the assumption that it is an objectual quantifier in name position.
Gist of Idea
Truthmaker talk of 'something' making sentences true, which presupposes objectual quantification
Source
Fraser MacBride (Truthmakers [2013], 3.8)
Book Reference
'Stanford Online Encyclopaedia of Philosophy', ed/tr. Stanford University [plato.stanford.edu], p.27
A Reaction
We might say, more concisely, that they are 'reifying' the something. This makes it sound as if Armstrong and Bigelow have made a mistake, but that are simply asserting that this particular quantification is indeed objectual.
Related Idea
Idea 18492 Not all quantification is either objectual or substitutional [Williamson]