"Working through the irreducibility of other to self"? We are back to the Existentialist Reformation, then. Kierkegaard, Sartre, etc. Why should we stay with the Self/Other problematic (be the Other reducibile or irreducible), though? The Self/Other problematic "makes-sense" only in the world of Theology & Romantic Love, and we don't want that, do we? The irreducible Other = "God" (as in Levinas) = "Woman" (as in Derrida).
"Singularity" doesn't improve the poverty of philosophy either. Peter Hallward writes in "The Singular and the Specific," _Radical Philosophy_ 99 (Jan/Feb 2000):
***** One way of approaching the question is to ask whether the fragmented plurality of subject positions are to be conceived as so many perspectives defined in some sense through their relations _with_ each other [e.g., multiculturalism], or rather as the _singular_ derivation of one absolute, self-differing force -- fragments, that is, of a single immanent unity, _without_ constituent relations among themselves [e.g., much of what is called postmodernism]. Is our postmodern heterogeneity the space of a _specific_ plurality, or of what, after Spinoza, Deleuze would call one self-modifying substance, one singularity-multiplicity in which 'everything divides, but into itself'? [16]...[A] _singular_ individual is fundamentally self-individuating, beyond relationality as such. In the absence of others, the singular properly creates the medium of its own existence (its own _expression_, in Spinoza's sense). The singular is a-specific.[17]...
[16] Gilles Deleuze and Felix Guattari, _L'Anti-Oedipe: Capitalisme et schizophrenie_, Minuit, Paris, 1972 / _Anti-Oedipus: Capitalism and Schizophrenia_, trans, Robert Hurley et al., University of Minnesota Press, Minneapolis, 1983, p. 91 / 76.
[17] 'In-difference with respect to properties is what individuates and disseminates singularities' (Giorgio Agamben, _The Coming Community_ [1990], trans. Michael Hardt, University of Minnesota Press, Minneapolis, 1992, p. 19). *****
Whether the Infinite (1) divides itself into Self/Other (e.g., Protestantism, left-Hegelian dialectic, etc.) or (2) endless singularities, the fact remains that both perspectives are based upon a Platonic idea. Again, historical necessity and contingency disappear, for there is no room for history in the eternal Tea Ceremony.
Yoshie