I'm pretty sure Deleuze never said anything about difference, multiplicity, variables, or process that has proved useful to a scientist or engineer, but I'd be very interested to be proved wrong.
I'm an engineer and I find some of his stuff useful, particularly when it comes to thinking through how to think about how to use large p, small n data.
But I also don't have a strong reactionary anger to Deleuze's penchant for writing in an obscurant quasi-post-modern literary style, and I get that many do. In any case, it's not like similar ideas are not also worked through in less cryptic ways in contemporary philosophy of science journals.
But I also don't have a strong reactionary anger to Deleuze's penchant for writing in an obscurant quasi-post-modern literary style, and I get that many do. In any case, it's not like similar ideas are not also worked through in less cryptic ways in contemporary philosophy of science journals.