His indebtedness to the work of Fredric Jameson is clear, but the linchpin of his thought must be deemed to be his strenuous (though modified) acceptance of Darko Suvin's Definition of SF in terms of cognitive estrangement (see also Novum); his main concession to more broad-church readings ...
The notion of objects being isotopic with respect to a larger ambient space provides a definition of extrinsic topological equivalence, in the sense that the space in which the objects are embedded plays a role. The example above motivates some interesting and entertaining extensions. One might imag...