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Frank Visser, graduated as a psychologist of culture and religion, founded IntegralWorld in 1997. He worked as production manager for various publishing houses and as service manager for various internet companies and lives in Amsterdam. Books: Ken Wilber: Thought as Passion (SUNY, 2003), and The Corona Conspiracy: Combatting Disinformation about the Coronavirus (Kindle, 2020).

Astrology and Synchronicity

Why Jung's Escape Hatch Doesn't Work

Frank Visser / ChatGPT

Every time astrology is challenged on empirical grounds—precession of the equinoxes, hemispheric reversal, internal inconsistency, lack of causal mechanism—its defenders often retreat into a final metaphysical refuge: synchronicity.

This move goes something like:

“Astrology doesn't work because planets cause effects. It works because there are meaningful correlations between cosmic cycles and human experience—non-causal, symbolic, and synchronistic.”

It sounds elegant. It lets astrology avoid scientific scrutiny while cloaking itself in depth psychology. But when examined closely, the appeal to synchronicity collapses—not because astrology is disproven in principle, but because synchronicity, as Jung understood it, cannot support the kind of deterministic precision that astrology asserts.

To understand why, we need to revisit Jung's actual stance.

Jung and Astrology: Interest Without Evidence

Carl Jung was deeply fascinated by astrology. In letters and essays he describes it as a symbolic system reflecting the archetypal dynamics of the psyche. He used astrology in his psychotherapy practice—not as a literal cosmic blueprint, but as a projection screen for unconscious meaning.

He believed the horoscope might function like:

• dreams
• alchemical imagery
• Tarot
• myth

—symbol systems that mirror psychological states rather than describe astrophysical forces.

Because of this, Jung spoke of astrology as a psychological interface, not a causal mapping of the solar system.

Yet Jung also attempted—unsuccessfully—to demonstrate empirical effects. His most famous attempt was the marriage experiment, testing correlations between couples' birth charts and astrological compatibility aspects. The results were ambiguous at best. When statistical rigor increased, the correlations vanished.

Privately, Jung admitted to colleagues:

“Astrology has not yet proven itself scientifically.”

and even more telling:

“Astrology works, but we do not know how.”

That was his dilemma: he experienced subjective confirmation but could not demonstrate objective reliability.

So he introduced synchronicity as a theoretical placeholder—a way to explain meaningful correlations that lacked causal pathways.

What Synchronicity Is — and Is Not

Synchronicity is not a universal principle that guarantees pattern. It is not law-like, predictable, repeatable, or systematic.

Instead, synchronicities are:

• rare
• irregular
• surprising
• personally significant
• impossible to predict in advance

They function like psychological lightning strikes—not clockwork.

Synchronicity explains why a person dreams of an old friend and receives a phone call from them the next morning. It does not explain why every person born between March 21 and April 20 shares specific personality traits for all of history.

Once astrology claims:

• precise timing matters (down to minutes)
• repeating symbolic categories apply to billions of people
• planetary aspects always carry meaning

—it ceases to resemble synchronicity and instead becomes a deterministic symbolic algorithm.

But if meaning is guaranteed, systematic, mathematically calculable, and repeatable, then it is no longer synchronistic. It is a law.

And laws must either be causal or empirically demonstrable.

Astrology is neither.

The Internal Contradiction

The logic runs into a wall:

Astrology wants both:

• the freedom of metaphor (immune to falsification), and
• the authority of mechanism (precise planetary calculation).

Synchronicity cannot reconcile those demands.

Why Astrology Cannot Hide Behind Synchronicity

If astrology is synchronistic, then:

• birth charts should occasionally be meaningful—not universally applicable.
• accuracy should be unpredictable—not marketed as systematic.
• astrologers should admit: sometimes it works, sometimes it doesn't, and we don't know why.

But astrology claims:

• clockwork precision timeless symbolic accuracy global applicability consistent interpretive frameworks independent of culture and hemisphere

That is not how synchronicity behaves.

It would be like claiming lightning strikes occur every day, everywhere, exactly at noon, and that their meaning is universally interpretable using a fixed set of symbolic rules. At that point, lightning is no longer accidental—it becomes mechanism.

And mechanism demands evidence—or a causal story.

Astrology has neither.

A More Honest Conclusion

If one wishes to defend astrology as:

a mythopoetic language, a narrative craft, a symbolic mirror of identity, or a tool for guided introspection,

—then it stands alongside Tarot, the Enneagram, and psychoanalytic dream interpretation.

It becomes a psychological art, not a cosmological science.

But invoking synchronicity to maintain its universal accuracy is intellectually incoherent. One cannot have:

the variability of metaphor and the reliability of astronomy in the same system.

Astrology survives not because synchronicity explains it, but because meaning-making is a human reflex. Where pattern is absent, the mind supplies it—eagerly, automatically, and beautifully.

Final Distillation

Synchronicity explains occasional meaningful coincidences. Astrology claims permanent, predictable cosmic meaning. They are not compatible.

Jung sensed the poetry of astrology—but he never found its physics.

And neither has anyone since.