Board Thread:Warhammer 40k General Discussion/@comment-176.205.23.248-20140531233700/@comment-6078851-20140611023226

that's a good point, the ullanor crusade marked a change in the level of the ork threat with huge swathes of ork empires being swept aside. this leads to a theory: orks have a gestalt, subconcious psychic link which leads to a bunch of fun, orky shenanigans - guns work 'cause they believe they work, vehicles painted red are faster 'cause they believe 'red ones go faster', enough orks in a warzone attracts other orks from systems away, etc.

so my theory is this - what if the size orks grow to is comparitive to the actual physical volume of orks in the galaxy (sort of a bleedback effect from their gestalt psychery)? so back in the day when orks held a ton more territory, which would let them be more numerous, they may have been bigger than orks are nowadays. because i could see ghazghkull going toe-to-toe with a primarch but i struggle to see him having a chance against emps, and whoever the 'emps throttling' ork was he had to have been a fair bit bigger than thraka.