The phrase "upon acquaintance" is correct and can be used in written English.
It is typically used to refer to something that happens or is known after meeting someone for the first time. Example: Upon acquaintance, it became clear that their personalities clashed and they would never become close friends.
She said that Robert Benchley "improved upon acquaintance" but that "about Dorothy Parker the same cannot be said".
But even in a position of dependence Clarissa is too truthful, or proud, to cater to Lovelace's ego or to cease regretting that she left home with him: he is not, she tells him, "a man . . . who improved upon acquaintance".
Thus, the conceptual categories exist only potentially, but not actually, in extra-mental reality; it is possible for the intellect, upon acquaintance with one of the actual categories in extra-mental reality, to form the concept of the corresponding conceptual category (on Auriol's ideas on the category most broadly, see Amerini 2014).
This seemed the case to me immediately upon acquaintance with the two-person show by Carl E. Hazlewood and Olu Oguibe at Five Myles.
This study investigated whether the extent to which self-reflection modulates brain activity could be dissociable from reflecting upon an acquaintance and upon general semantic knowledge, with special focus on the involvement of the insular cortex.
As for the MPFC, ACC, and STG, we observed that activation in those regions significantly increased when subjects engaged in self-reflection rather than when they reflected upon an acquaintance or upon general knowledge (right MPFC, F 1,30) = 6.484, p = 0.016; left MPFC, F 1,30) = 4.904, p = 0.035; ACC, F 1,30) = 7.591, p = 0.010; STG, F 1,30) = 5.388, p = 0.027) (Figure 4).
All analysis is only possible in regard to what is complex, and it always depends, in the last analysis, upon direct acquaintance with the objects which are the meanings of certain simple symbols.
Thus upon intellectual acquaintance, Socrates (and in particular his ratio of rationality) directs us to form the concept 'human being', and that concept is Socrates, one of Socrates' several potential intentional existences.
In De Magistro, for example, Augustine argues that the efficacy of language is ultimately dependent upon direct acquaintance with the external world, and even our ability to learn from others presupposes that what they tell us can be reduced to elements with which one has had some prior acquaintance [De Magistro 11.37].
These results may thus support the involvement of posterior areas in perspective-taking [13] and comparison processes [60], as subjects might have employed comparison and simulation when reflecting upon an acquaintance.
If he was part of the family, he was the polite uncle who clasped your hand upon renewing your acquaintance, smiled and asked how you'd been like he really wanted to know.
