Here the River Brought You

There was more to it than environment influencing character. Primarchs were native of their homeworlds down to their blood and bone in ways that did not make sense when one considered that they were non-native adoptees of that world from a lab under the mountains of Terra. Yet everything fit so perfectly.That, of course, was if you believed causes preceded effects, which just wasn’t true. Not when the Warp was involved. Not when beings that existed outside of time were involved. Everything happened because it was meant to happen, because it always happened.a.k.a., Primarchs home-planet swap