>>16730295
if one considers Dawkin's memetics as a real phenomenon, then demons are real, predatory memetic lifeforms without corporal body.
Just like a computer virus is real and take over your computer, demon can take over your mind.
Demons live within human brain neural networks and can spread and infect you unless you have natural or developed immunity.
To defeat demons one has to have knowledge how to fight them (religious piety and righteousness) and isolate and eradicate the infected.
Some people are born naturally immune, some need drastic dogmatic measures to prevent outbreaks.
Cultural and religious dogma is like mental immune system. It may overreact, but if you destroy it, you get infected and may begin to spread demonic plague.
An opened mind is like an open wound, just waiting for infection to enter.