All those people crowing that Jeremy Corbyn has opportunistically changed his position on Trident, Europe, military interventionism, singing the National Anthem and so on know nothing about left-wing politics.
It's obvious that with the hostility of the PLP it would be insane tactics to insist on such things right now.
There's a party conference coming along, bound to be dominated by the activists and the unions. A little bit downstream we'll be watching the deselection of right wing and centrist MPs. Corbyn (and his more machine-oriented allies) will leverage the new activist base to transform the PLP: a project of at least a couple of years.
What's the rush? They've been waiting centuries.
S. M. Stirling's second Draka book, "Under the Yoke", has been giving me nightmares!
It turns out that men are more systematising than women while women are more empathising than men ... you won't be surprised to hear. Intriguingly, these two scales turn out to be almost orthogonal.
Additionally, both men and women studying hard science subjects are more systematising than those studying the humanities. Finally, those who score highly on the Autistic Spectrum Quotient scale (probably this means Asperger's Syndrome) are on the far end of the systematising distribution while also exhibiting deficits in empathising (empathising kind of equals agreeableness in the FFM).
All is explained in this interesting paper (PDF).