From an engineering perspective, your brain is a powerful biocomputer (for a full breakdown of its architecture, see the article The User Manual for Your Mind That Nobody Gave You).
1. Infection:
Viruses enter through channels of social programming — upbringing, media, social environment — at moments when your "firewall" (critical thinking) is switched off: during childhood, or in states of intense emotion such as fear or misplaced trust in authority. (To understand exactly how authority figures and society bypass your defenses, read Why Arguing Is Pointless: The Mechanics of Mental Infection.)
2. Installation:
A foreign idea — "money is evil," "you need to fit in" — gets written into the root directory of your subconscious and granted administrator privileges.
3. Execution:
From that point on, you no longer think through a situation — you automatically run the script. You act not in your own best interest, but exactly as the virus prescribes.
4. Self-Defense:
The virus protects itself. Any logical attempt to challenge the dogma triggers aggression or irrational rejection in the host — a system error.