In the essay ‘Sexual Differing’ from their book New Materialism: Interviews and Cartographies, Rick Dolphijn and Iris van der Tuin develop their new materialist take on sexual difference through their rereading of Simone de Beauvoir’s The Second Sex. I propose to read this essay as deploying the ‘analytical tool’ of ‘jumping generations’ articulated in the homonymous paper by van der Tuin as signature of the ‘new materialist’ ‘third wave’ of feminist theory. By pointing to the immediate textual context of the (...) passages from The Second Sex quoted in ‘Sexual Differing’, to the philosophical underpinning of Beauvoir's work, and to the historical context of its reception, I argue that while the tool of ‘jumping generations’, as put to use in ‘Sexual Differing’, might produce unexpected outcomes, it also risks confining to dusty feminist archives segments of feminist philosophy that might still be relevant for thinking gendered oppression and liberation today: Beauvoir's understanding of the social ontogenesis of freedom, the collective and egalitarian nature of political transformation and the genealogy of materialist feminist thought theoretically and historically linked to Beauvoir and The Second Sex. The issue is not merely one of historical and theoretical accuracy, but of enabling a capacious materialist analysis of gendered oppression and liberation. I conclude by pointing at how Dolphijn and van der Tuin's approach expressly discards understandings of history and scholarship that it nevertheless necessarily performs, and propose that this can be taken as a starting point to rethink sexual differing in terms of a political and ethical commitment beyond its originary metaphysical new materialist articulation. This is where, I propose, the above-mentioned conceptual resources linked to The Second Sex and muted by ‘Sexual Differing’ could prove fruitful, and timely. (shrink)