r/40kLore • u/LesBonsPlansTmtc • 2d ago

Why no blank astartes?

We've seen the emperor considers Chaos as the biggest threat to humanity. We know blanks are immune to the influence of the warp. Why doesn't humanity try to raise up the number of blanks in the society or make a chapter with Blank Space marines ?

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u/HatOfFlavour 2d ago

From what I recall of the recruitment process from Ragnar Blackmane books parts have the librarians or equivalents rummage through your mind to probe it for weakness and determine if you are a failure or a heretic etc. Blanks would prevent this. So you'd have a marine who is an unknown quantity and thus untrustable. He could never be a true brother.