The question “do you believe in astrology?” is almost always a bad question. Not because it’s impolite, but because it’s philosophically confused — it asks for a binary answer to something that doesn’t have one, and it frames the entire subject as a matter of credulous belief versus skeptical rejection.
The more interesting question, the one that serious practitioners of divination systems have been circling for millennia and that academic philosophy has been arguing about for centuries, is something like this: how much of who you are did you choose?
Your answer to that question determines whether astrology is interesting to you, and in what way. And most people, if they’re honest, don’t have a clean answer.
Two Positions Nobody Actually Holds
Hard determinism says that every event in the universe, including every thought you have and every decision you make, is the inevitable consequence of prior causes. The laws of physics, operating on the state of the universe at any given moment, fully determine the state of the universe at every future moment. You didn’t choose your personality, your appetites, your values, or the neurological patterns that make you respond to situations the way you do. “You” are a process unfolding from prior processes, all the way back to conditions that predate your birth by billions of years.
This position has a serious scientific pedigree. Laplace famously imagined a demon that, knowing the position and momentum of every particle in the universe, could compute the entire future. Modern neuroscience has added to the deterministic case: Benjamin Libet’s experiments in the 1980s found that brain activity associated with voluntary movement begins several hundred milliseconds before subjects report consciously deciding to move. The decision, in some sense, happens before the awareness of deciding.
Hard determinism is coherent. It’s also impossible to live. No one actually treats themselves or others as systems without agency. We hold people responsible, make plans, feel regret, deliberate about choices. The lived experience of agency is so fundamental that even committed determinists tend to preserve it in practice while denying it in theory.
Pure libertarian free will — the opposite position — says that human beings have genuine, unconstrained agency. You are the ultimate author of your choices. Your character, while influenced by genetics and experience, doesn’t determine your behavior: at any moment, you could choose differently. This position is also incoherent in its strong form. The same neuroscience that complicates determinism also shows that what we experience as “choice” is deeply embedded in prior states of the brain, which are themselves the product of genetics, development, and accumulated experience. The sense of unconstrained agency is, at minimum, a significant simplification of what’s actually happening.
Neither position matches experience. Neither is fully defensible. And yet most public conversations about fate, destiny, and divination oscillate between them: either “everything is written” (hard determinism, cosmological variety) or “you are entirely the author of your life” (the motivational poster version of free will).
Compatibilism, and Why It’s the Default
The philosophical tradition that has done the most careful work here is compatibilism, sometimes called soft determinism. Its central claim is that determinism and meaningful freedom are not actually in conflict — that you can believe both that behavior is causally determined and that agency, responsibility, and choice are real and important concepts.
The key move in compatibilism is a redefinition of freedom. Freedom, on this account, doesn’t mean “uncaused” or “exempt from prior causes.” It means something more tractable: acting from your own desires, values, and reasoning rather than from external compulsion or internal dysfunction. You are free when you do what you want to do, when what you want reflects who you are, and when who you are hasn’t been shaped by coercion or pathology.
Harry Frankfurt’s version of this argument, developed in the 1970s, focuses on the structure of desires. Human beings, unlike other animals, can want to want things — we have what he calls second-order desires. I might desire a cigarette (first-order desire) while also desiring not to be the kind of person who desires cigarettes (second-order desire). The capacity for this kind of reflective self-relation is, Frankfurt argues, the basis of meaningful agency. Freedom is the alignment between your first-order desires and your second-order ones — when who you are in practice matches who you want to be.
Daniel Dennett, perhaps the most prominent contemporary compatibilist, adds a practical argument: the concept of determinism applies at the level of physics, not psychology. At the psychological level — the level at which we actually live and make decisions — there are genuine alternatives, genuine deliberation, genuine choice. The fact that these processes are realized in physical processes governed by causal laws doesn’t make them less real or less meaningful. The word “choice” means something, and that meaning isn’t dissolved by physics.
Where Astrology Lives in This Landscape
Here’s why this matters for how you think about divination systems.
Hard determinism, taken cosmologically, produces a version of astrology that is both the most popular and the least defensible: the position that planetary positions at your birth literally determine who you are and what will happen to you. Everything is written in the stars; your fate is set. This is the astrology of newspaper horoscopes and dire predictions. It’s also, almost certainly, not true in any direct causal sense. The gravitational influence of Jupiter on a newborn is smaller than that of the attending physician. The mechanism is missing.
Pure free will produces a different problem with astrology: if you are entirely self-determined, any external system that claims to describe your character or situation is, at best, a mirror you chose to look into. The reading tells you nothing you didn’t already know; it just reflects your own projections back at you. This isn’t entirely wrong — projection is real — but it renders the practice almost purely performative, which doesn’t match the phenomenology of people who use these systems seriously.
Compatibilism — soft determinism — opens a more interesting space. On this view, you have a character: a set of tendencies, responses, strengths, and vulnerabilities that you didn’t entirely choose but that are genuinely yours. These tendencies don’t determine your behavior in the way a thermostat determines temperature. They create probabilities, inclinations, characteristic ways of meeting situations. And crucially: knowing your tendencies is a form of freedom, because it allows you to engage with them deliberately rather than being driven by them unconsciously.
This is precisely the claim that sophisticated practitioners of BaZi have made for centuries, often in exactly these terms. The Four Pillars chart doesn’t tell you what will happen. It describes your characteristic energetic configuration — the specific pattern of elemental strengths and tensions that shapes how you tend to respond to situations. A Yin Water day master has characteristic responses to pressure, characteristic creative strengths, characteristic vulnerabilities in certain relational dynamics. None of this is destiny. All of it is information.
The Stoics, who were determinists of a particular kind, made a structurally identical argument about character. They believed that human nature had a fixed form — the rational animal, moved by reason toward virtue — and that the philosophical life consisted in understanding this nature clearly enough to live in accordance with it rather than in constant friction against it. “Know thyself” wasn’t just a moral instruction. It was a description of the condition of freedom: you are most free when you act from a clear understanding of who you are, rather than from confusion or self-deception about it.
The Practical Difference
There’s an experiential gap between the two ways of relating to a divination system that maps directly onto this philosophical distinction.
The determinist reading says: my chart shows I am a Yin Water day master. This is what I am. This explains my behavior and predicts my future. There is comfort here — relief from the anxiety of self-definition — but also a kind of contraction. The system becomes a container that constrains as much as it clarifies.
The compatibilist reading says: my chart describes a characteristic pattern of tendencies. These tendencies are real — I recognize them, they’ve shaped my life in ways I can trace — but they’re not my fate. Understanding them gives me more choices, not fewer. When I know that I tend toward over-absorption in detail under pressure, I can watch for that tendency and intervene. When I know that my current ten-year cycle emphasizes relational dynamics over individual achievement, I can bring more deliberate attention to relationships rather than being puzzled when solo effort feels unrewarding.
The second reading is more demanding. It requires you to do something with the information. It positions the system as a tool for self-knowledge rather than a source of cosmic permission. And it requires a philosophical position — roughly, that knowing your tendencies expands rather than limits your agency — that not everyone holds.
But it’s the only reading that makes the practice genuinely interesting and genuinely useful. The reading that says “this is your fate” is, at best, comforting and, at worst, disempowering. The reading that says “these are your tendencies — now what will you do with them?” is the one that has practical consequences.
The Question Behind the Belief
“Do you believe in astrology?” is still not the right question. The question that actually matters — for astrology, for therapy, for personality frameworks, for any system that claims to describe who you are — is this:
Do you believe that knowing your tendencies clearly is different from being trapped by them? Do you believe that self-knowledge, even imperfect self-knowledge, creates more freedom rather than less?
If yes, then the cosmological accuracy of astrology is almost beside the point. What matters is whether the system generates accurate enough descriptions of your characteristic patterns to be useful — and whether you engage with those descriptions in a way that expands your range of response rather than contracting it.
If no — if you believe that describing a tendency is the same as predicting behavior, and that self-knowledge is just another form of determinism in disguise — then no divination system will help you, and neither will therapy, and neither will much of the self-reflection literature.
Most people, examined carefully, believe something in between. Which is to say: most people are soft determinists in practice, whether or not they use the term.
If you knew your tendencies more clearly, would that limit your choices — or multiply them?