Why do graphic files come in parts?

The story is adult in tone, with many mythological, historical and political references, and a little explicit sex. Its genesis owes something to the influence of Michael Moorcock's Jerry Cornelius stories, though Moorcock and Talbot agree that the similarities between the characters are limited. Warren Ellis calls Arkwright "probably the single most influential graphic novel to have come out of Britain to date... probably Anglophone comics' single most important experimental work."