And are those "unhelpful" questions, because they invite disillusion?
Or is dis-illusion - hyphen deliberate - precisely what's now needed to widen the debate from business-as-usual carbon de-intensification, to looking at politically taboo drivers that lead to the transgression of nature's carrying capacity - i.e. population, consumption, their product (I simplify) as environmental impact; and the underlying human condition that must ultimately integrate the thermodynamics, the ecology and a politics in which, as an old feminist axiom has it, "the personal is the political"?
Challenging but exciting.
Alastair.