J.R. Carpenter’s book is an accomplishment, not just in terms of the core project, but also by virtue of how the codex is put together. The introduction is by Jussi Parikka, the after-poem by Lisa Robertson. While social media and ethereal imaginations of the network keep us from being lonely as a cloud these days, they obscure the material nature of computing, the cost of linking us in terms of wire and heat. Carpenter’s computer-generated Generation[s] was concerned with the computational production of text; The Gathering Cloud also engages with the generation of power. This book and the corresponding digital performance, for instance at the recent ELO Festival in Porto, yields up the rich results of research, cast in accomplished verse. As with Carpenter’s other work that is rooted in zines and the handmade Web, it is personal rather than didactic. Deftly, despite the gravity of the topic, the book still affects the reader with a gesture, not a deluge of facts — more by waving than drowning.