I think it's a good idea to explain things sometimes. Knowledge is meant to be shared, after all. I'm a scholar and a teacher, even if I don't behave that way most of the time. I will include a snippet of knowledge every time I add something to the journal.
I read a little of Natasha's journal and noticed she doesn't really understand a few things.
In this instance, I shall broadly explain E'er.
E'er is a subatomic particle, symbol ƹ, with a variable charge and behavior depending on the environment it is observed in, and a mass a hundredth of that of a neutron.
Studies have shown it's incapable of coupling with itself. It can, however, transform matter. Levels are an example of this.
When a creature dies, E'er is released in its compressed state, which forms clumps that dissipate with time if left alone. This obeys the Laws of E'er; E'er cannot be created nor destroyed, only transformed.