Necropolis versus Academy.

There's no need to quote the manual. I read all of that a long time ago. It's just that none of the above applies in practice.

You've got quite a discussion going here – and for no reason. The manual clearly states what affects the increase in dark energy. In this case, Lordesat is right – the "Lord of the Dead" skill does not provide an increase in dark energy (in addition to increasing the hero's knowledge (+1), it enhances the "Necromancy" skill, which is quite important in the simplified development method [some of this is mentioned in "The Economy of the Necronomicon"] – we increase the racial skill by 5%, without bringing it to the expert level; the "Bone Pillar" building also contributes to this goal, increasing "Necromancy" by 10%).