Conjecture on acceleration

[APerno]

Annie Millwood was the first taste of blood (a spontaneous act)

. . . then months later he got his first chance to act fatally

Martha Tabram was his first kill, but he hesitated to rip her open (opportunity via prowling)

. . . three weeks later he was ready to go all the way

Polly Nichols was an almost fulfillment of the desire, but was interrupted and the fantasy wasn't satisfied (poorly planned)

. . . having come so close he moves again only one week later

Annie Chapman is complete fulfillment of the desire and the taking of a trophy, he feels successful (well planned via solicitation)

. . . temporarily satisfied he waits three weeks

Kate Eddowes is a repeat performance of Annie, with trophy, but added facial mutilations come from a growing sense of dominance/confidence (planned via stalking)

. . . temporarily satisfied he waits five weeks

Mary Kelly is where is was always going, always needed to be (well planned via solicitation)

. . . satisfaction and rest

[Damaso Marte]

I suspect he had some desire to cut off a body part. Tried to decapitate Nichols and Chapman, tried to cut off Eddowes's nose, finally succeeded in cutting off MJK's breasts.