The World Without Us perspective. Chauncey Mabe of the "South Florida Sun-Sentinel" calls the book "one of the most satisfying environmental books of recent memory, one devoid of self-righteousness, alarmism or tiresome doomsaying". Tom Spears of the CanWest News Service concludes "it's more a portrait of ourselves, taken through an odd lens" and "[s]ometimes an obituary is the best biography". The book is categorized as non-fiction science but some commentators emphasize it may be better described as speculative fiction. "The World Without Us" is grounded in environmental and science journalism. Like other environmental books, it discusses the impact that the human race has had
Off the Radar represents the theme of the song, which, according to Erez, is how "idolization and worship in their obsessive and blind form led us to the commonly used comparison between art and religion - between creativity and creation, and how the two can easily look the same and cross over." "Paste" magazine's Kayleigh Hughes stated, "In its cohesion and crispness, its innovative approach, and perhaps most significantly the astuteness and clarity with which it engages in the frantic, threatening, vibrant world that surrounds Erez, Off the Radar is galvanizing." Sumsion wrote that the album established Erez as a "rarity in glitchy,