"Blood Energy Extraction"
This was the title which made Daneel step back with astonishment.
The very basis for the method of growing in power in the continent of Angaria was that one had to obtain Energy from Energy materials.
One of the earliest things that any fighter or mage learnt was that Energy was a magical thing which was modified in some way when any living being absorbed it. This was why resources were always more effective on those who had higher potential, because they would be able to advance more with the same amount of Energy because they could make use of more of it before it was modified in a way which made it unusable by any other being.
The very idea that Energy already absorbed could be extracted from blood was shocking.
Scrambling forward, he asked the system to analyse the book before impatiently waiting for the result.
