AND: Logical conjunction, symbolized as…  ∧

OR:    Logical disjunction, symbolized as…   ∨

AND/OR: Logical confusion, symbolized as…  IMAGE- AND and OR symbols combined as Lacanian AND/OR lozenge
according to a woman Lacanian analyst in this journal.

See also another female disciple of Lacan
writing as co-author with a philosophy professor
in Saturday's online New York Times 's "The Stone"—

"Let Be: An Answer to Hamlet’s Question."

Perhaps they thought the question was…

 

http://www.log24.com/log/pix11B/110711-ANDOR.jpg

http://www.log24.com/log/pix11B/110711-Wikipedia_Portrait_of_Simon_Critchley.jpg

Wikipedia portrait of New School
philosopher Simon Critchley

"To be and/or not to be?"

For a more philosophically respectable approach to
the same shape, see Sunday morning's Wittgenstein's Diamond.

"We're gonna need more holy water." —Hollywood saying