Board Thread:Warhammer 40k Novels/@comment-27376167-20151210113237/@comment-24091837-20160416121911

Even if my theory seems too far-fetched for you, there are plausible reasons that could fit the spirit of my core theory. It could be the Primarch set into motion events for life to occur on the Tau planet. It could be the Primarch had a hyper-extended lifespan, due to a bloodline quirk, or technological means, or even by splicing alien DNA into his own. Perhaps the Tau are not even from the Tau planet, merely transplanted from another planet by some outside force, not neccessarily the Emperor, his sons, or even mankind.

The Primarch could have taught his Legion the principles of an improved way to deal with intelligent Xenos. The Primarch may have prefered to explore, & observe life in other parts of the universe. The possibilities are many that could render my idealised theory as completely realistic in context of established lore, all that is needed is vision, imagination, & loads of research.

You need to expand your frame of reference to encompass greater possibilities in established Intellectual Properties, the way I am certain GW itself does.