We agree entirely with Arlettaz et al.  that we face an environmental crisis of extraordinary proportions. However, their analysis of how to respond perfectly illustrates our point. In particular, we would transpose their statement 'Although we agree that communication strategies must accommodate human psychology to succeed, we believe that neglecting or euphemizing the dramatic impact that humans have on the biosphere, just through fear of the Cassandra syndrome when addressing an inconvenient truth, is not an acceptable alternative discourse.' to 'Although acknowledging the dramatic impact humans exert on the biosphere, there is no acceptable alternative discourse; to adopting communication strategies that accommodate human psychology.'.