Lessons_from_the_age_of_coal.opus: Lessons_from_the_age_of_coal.txt
	piper-make-audiobook $<
	mv $<.opus $@

Lessons_from_the_age_of_coal.pdf:
	wget https://media.nesta.org.uk/documents/Lessons_from_the_age_of_coal.pdf -O $@

Lessons_from_the_age_of_coal.txt: Lessons_from_the_age_of_coal.pdf
	# pdfcat $< > $@ # worked badly
	false
	# Copy and paste from browser, fix manually
	# Split into paragraphs, stretch into single lines with `set tw=9999`, `ggVG`, `gq`
	# Drop References section in the end.
	# Remove remarks:
	# [.][0-9]\+ [A-Z]
	# [.][0-9]\+$