Stupidity is a tricky thing. It’s omnipresent, but usually hidden. It can be the place where things begin—first drafts, new ideas—but it’s also a final judgment. As philosopher Avital Ronell points out, stupidity has its own nature and contours, yet we rarely take time to explore it. We tell children that it’s wrong to call someone stupid, because we consider it “the ur-curse, the renunciation of which primes socialization in this culture.” Fear of being stupid can inhibit desire, but the inhibition feels necessary. Certainly, it’s as derogatory a term in art criticism as it was in kindergarten. But it might be time to reconsider. Deliberately or not, “Thanks to Apple, Amazon, and the Mall” presents some very stupid things—many of them specific to online life and its vernacular—as a crucial means for contemporary socialization. The group show, curated by Brian Droitcour, takes social relations in the digital age as its focus: the emotional valences of digital identities, the implications of their potential for shape-shifting, and the way artists weave their lines of inquiry between the porousness of the virtual world and hard materiality. “Thanks to Apple” is a small show, with nine artists and one gallery of works, but it’s also …