The physics turned out to be less magical than the internet version, and much more interesting. One of the experiments behind these claims is called the delayed-choice quantum eraser. In a famous experiment published in Physical Review Letters in 2000, researchers worked with entangled photons in an arrangement where information associated with which path a photon had taken could be preserved or “erased” even after its entangled partner had already been detected. The authors described the result in terms of delayed determination of particle-like or wave-like behavior.

Then, in 2012, a team including Anton Zeilinger performed an even stranger experiment called delayed-choice entanglement swapping. Four photons were involved. Two were registered first. The choice of measurement performed on the other two was made later using a quantum random-number generator. Depending upon that later measurement, the already registered photons could subsequently be sorted into groups displaying different kinds of correlations. The researchers themselves used the wonderfully provocative phrase “quantum steering into the past.”

This is usually the moment when the internet takes off running: Science proves the future can change the past. Except that isn't what the experiments establish. Yesterday's detector reading does not change because of today's decision. Nothing disappears from the record. No information can be sent backward to warn your younger self not to marry that man, take that job, board that plane or send that text. The earlier event remains the earlier event. What becomes different is the later context through which relationships within the data can be seen.

I find that much more interesting than time travel. Because it raises a question I have been circling for a long time: When exactly does an event acquire its meaning?

We normally imagine causality in one direction. First the seed, then the tree. First the meeting, then the relationship. First the choice, then the consequences. The past produces the present, so when we want to understand the present, we look backward toward whatever started it. Seed → tree. But consciousness also moves in the opposite direction. We look at the tree and discover something about the seed that could not possibly have been known while the seed was still lying in someone's hand. Seed ← tree.

The tree does not travel backward through time and alter its seed. The seed remains what it was. But a seed cannot tell us the entire story of the tree while it is still a seed, the seed only contains physical information about the tree - it must be a birch or an oak for example. The story about the tree is different. Something that seemed insignificant can become the beginning of an entire life. Something that once looked like catastrophe can eventually become a threshold. Something we called destiny can later reveal enormous projection. Something we believed was the beginning of our future can turn out to have been the beginning of just mine.

This gives me a distinction I find increasingly important: the past may be fixed without being finished. The event is fixed. Its meaning may continue developing. And there is another reason the image of the tree has been following me. A tree contains much more than the memory of its seed. It contains the history of everything that happened afterward. Drought, abundance, injury, fire, competition, unusually cold years, extraordinarily good growing seasons all leave traces. Scientists can reconstruct parts of a tree's environmental history through its rings. Fire can leave scars. Years of difficult growth can remain visible decades later. The tree does not “remember” these things the way a human being remembers, but its present physical structure contains evidence of what it has lived through.

Maybe our memories are more like this than like an archive? We tend to imagine memory as a collection of recordings stored somewhere inside us: this happened, then this happened, then this happened. But some experiences do not remain neatly in the past. They become incorporated into the structure through which we experience the present. We remember them cognitively, but we may also encounter them as tension, avoidance, anger, shame, longing, a bodily contraction, a sudden fear, an expectation of rejection, or a reaction that seems disproportionate until we understand the history underneath it.

There are ideas in Human Design that have made me think a great deal about the retrospective nature of experience: the possibility that an experience may need to be lived completely before some of its meaning becomes available to us. And together with my teacher I have been doing another kind of work called "recapitulation" or "re-viewing". We deliberately return to past experiences, including memories we think we already understand, and look again. What fascinates me about this work is that we are not trying to convince ourselves that something painful was secretly wonderful. We are not painting a happy ending over an injury. We return because the first version of a memory may not contain everything that was there. Some things were hidden by fear. Some by shame. Some by anger, loyalty, idealization or self-protection. Some simply could not be perceived by the person we were at the time! Sometimes the body registered something long before the conscious mind had language for it. This has changed what the expression “rewriting the past” means to me.

I cannot rewrite the historical record. If something cruel happened, I cannot make it kind. If somebody abandoned me, I cannot decide that they stayed. If I injured someone, understanding my motives does not erase their injury. But memory itself is not necessarily a sealed document. When something previously excluded becomes available, the experience can be reconsolidated within a larger picture. We do not have to change what happened in order to change what that event is connected to inside us.

Looking again does not mean making the past nicer. It means becoming capable of seeing more of it. This brings me back to my tree. For a long time I was preoccupied with the seed and who planted it, where did it come from, what were the intentions, who deserves acknowledgment for what eventually grew etc. Those questions still matter because history matters. If somebody gave me a seed, I cannot honestly grow an enormous tree and later announce that nobody ever gave me anything. We can reinterpret the seed. We cannot retroactively plant it ourselves. But I see something now that I did not see when I first wrote about the seed.

The seed is only the first moment in the life of the tree.

Maybe it matters less than I once thought whether the seed was planted with perfectly pure intentions. What matters too is everything that happened next.... Who watered it. Who neglected it. What grew around it. Whether there was drought. Whether lightning struck. Whether somebody cut into the trunk. Whether it survived fire. Whether its roots found water. Whether somebody returned years later and tended the wound. Every one of those moments becomes part of the same tree, part of its life, part of its history! Relationships have rings too... We can have a beautiful beginning. We can have years of genuine love, tenderness, sexuality, discovery, friendship, laughter and enormous influence on each other's lives. None of that becomes false because something painful happens later. But the later event does not become irrelevant simply because what came before it was beautiful either. It becomes another ring. And this is where I began to understand an old phrase differently: you will really meet each other when you begin to part.

I used to hear this as a beautiful, slightly tragic statement about relationships. Now I think it may describe something much more precise. We know each other one way while a relationship is still protecting its own continuation. We know each other through desire, attachment, hope, habit, projection, fear, negotiation and the future we are still imagining together. Separation changes the conditions. Suddenly there is less to bargain with. We discover what remains of love when possession is no longer possible, what remains of respect when desire is frustrated, what remains of gratitude when somebody chooses another road. We discover what we do with another person's vulnerability when we are no longer trying to secure a future with them.

And we discover things about ourselves too. Who are you when you cannot keep me? Who am I when I can no longer persuade you? What do you do with my heart when it is no longer convenient to carry it? What do I do with yours? Can I honor what existed without owning what comes next? Can we tell the truth when the truth no longer guarantees the outcome either of us wanted? Because the way we leave each other becomes part of the relationship too, part of that ring of the tree.... 

Years of tenderness do not disappear because the ending was cruel. But neither does cruelty disappear because the preceding years were tender! A sentence can be spoken directly into another person's most vulnerable place. Someone can be told, unmistakably, what position they occupy in the hierarchy of another person's life. And then the words can be reinforced through action: access disappears, contact disappears, the person who once occupied an enormous place is removed from the structure of the life almost completely and suddenly. There may be explanations... Fear, family, shame, anger, self-protection, confusion, survival, circumstances.... We may eventually understand every psychological mechanism involved. But explanation does not automatically alter what was registered as a ring. A word spoken cannot be pulled back into the mouth. An action completed cannot become an action that never occurred. And sometimes no amount of mental understanding changes what has already been recorded somewhere deeper than thought. This is where my own thinking became painfully concrete last night. I asked myself a question I did not particularly want to answer:

What if they died today? What would I remember? That question stripped away almost every theory. I would remember extraordinary beauty. I would remember love. I would remember tenderness, discovery, laughter, intimacy, enormous influence, things awakened in me that I would never want erased. I would remember a seed that grew into an extraordinary tree. But the memory would have a taste now. There would be bitterness in it. There would be grief mixed with regret. There would be unfinished pain. There would be words that could no longer be answered and questions that could never again be asked. And there would be something especially painful in knowing that some of it could have been repaired while both people were alive. That is when the tree became something else for me. We cannot change the rings that have already formed. We cannot make the drought unhappen. We cannot remove the year of the fire from the trunk. But while the tree is alive, another ring can still grow...

A conversation today cannot make yesterday's cruelty disappear, but it can become part of the history of what happened afterward. An apology cannot erase abandonment, but it can mean that abandonment was not the final human response to the relationship. A confession cannot undo deception, but it can introduce truth into a place where truth had been absent. I was afraid. I hurt you. I loved you. I chose differently. I was ashamed. I did not know how to face what I had done. I know now what this cost you. None of these sentences rewrites history. They add something to history that did not exist before.

Maybe this is one reason confession appears in so many spiritual and human traditions. At its deepest, confession is not self-humiliation. It is an opening of what has been sealed. Something held in secrecy, shame, resentment, grief or pain is finally allowed into relationship. What was stagnant can begin to move.  Spiritual traditions have their own language for this: karma, debt, forgiveness, confession, repentance, release, bardo... Psychology has other language: unresolved grief, relational injury, traumatic memory, repair, integration, memory reconsolidation. The languages are not identical, and I don't need to pretend that they are. But they point toward something I recognize experientially: there are experiences that continue demanding something from us because they have never been fully met.

We can talk ourselves around them for years. We can explain why everyone behaved exactly as they did. We can forgive intellectually. We can say: It is what it is. It happened. Move on. And sometimes that is enough.

Sometimes it isn't. Something remains in the trunk. This is where the metaphor of illness comes to me, and I want to use it carefully because unresolved emotional pain is not literally cancer. But some injuries seem to behave in the architecture of a life like something that was never contained. The original wound is followed by silence. Silence produces interpretation. Interpretation accumulates resentment. Resentment requires defenses. Defenses produce new behavior. Years pass. Eventually we are no longer dealing only with the original injury. We are dealing with everything that grew around it. By the time we finally look, the wound may be buried deep inside the trunk.

This is also why I don't believe every relationship needs reconciliation. Some relationships should remain finished. Some people are unsafe. Some conversations should never be reopened. Forgiveness cannot be demanded from the person who was hurt, and repair does not guarantee renewed intimacy. Sometimes the most honest repair available is two people finally telling the truth, honoring what existed, and continuing their lives separately. But while both people are alive, new information is still possible. A new ring is still possible. And suddenly I am back with those photons.

Again, I am not suggesting that quantum mechanics proves anything about relationships, karma, Human Design, memory or healing. Human beings are not photons. Love is not quantum entanglement. A painful breakup is not a delayed-choice experiment. I have no interest in taking a beautiful scientific mystery and using it as fake scientific evidence for a spiritual belief. The analogy interests me for another reason. A later event does not have to travel backward through time and physically change an earlier event in order to alter the larger pattern in which that earlier event now exists. The event remains. The pattern changes. You don't need to grow cancer anymore... That is exactly what can happen when we revisit memory. I do not go backward and manufacture a better childhood, a kinder breakup or a more flattering version of myself. I create another moment in the life of the same tree. From this new point, information that was unavailable before may become visible. Something hidden can enter the picture. Something frozen can finally be felt. Something I interpreted one way for twenty years may acquire another dimension without requiring me to deny a single historical fact.

Imagine meeting someone at twenty-five. At twenty-six you say: This is the love of my life. At thirty you say: This relationship is destroying me. At thirty-five you say: I wasted years. At forty you say: That relationship forced me to become someone I would never otherwise have become. At fifty you say: I finally understand what I was asking that person to give me because I had not yet learned to give it to myself.

Which interpretation describes the real past? Maybe all of them describe what could be seen from different rings of the same tree. This is why I have become suspicious of the sentence I finally understand what happened. I have said versions of it many times. Maybe a more accurate sentence is: I understand what happened from here! From this age. From this body. From this level of awareness. From everything that happened afterward. From what I know now that I could not know then. From the branch on which I am currently standing.

Five years from now, I may be standing somewhere else in the same tree. And maybe this is why separation can become one of the deepest opportunities to meet another human being. There may be a meeting at the beginning through attraction. Another through intimacy. Another through conflict. Another through years of shared life. But there can also be a meeting after the imagined future has collapsed, when two people return to an old ring and become capable of looking at it together.

That meeting requires courage.

Because genuine re-viewing does not promise us the story we prefer. I may discover that I was more manipulative than I remember. More afraid. More cruel. More loving. More loved. I may discover that someone I blamed was carrying pain I never saw. I may discover that explanations I accepted for years were only explanations and that the injury was exactly as real as my body had always known it was. I may discover that I need to apologize. I may discover that I need to stop waiting for an apology that will never come. Looking again does not mean making the past nicer. It means becoming capable of seeing more of it.

And maybe this is the strange place where the quantum experiment, Human Design, recapitulation, the tree, memory and relationships touch each other for me. They are not the same system and I do not need them to prove one another. They simply keep returning me to the same question: what if the meaning available to us now is not necessarily the final meaning of what happened? that we continue the meaning? regardless of what we thought we "decided"?  A seed cannot show us the tree.  A meeting cannot show us the relationship. A wedding cannot show us the marriage. Love cannot tell us how two people will treat each other when love no longer gives them what they want. A betrayal cannot show us immediately what will eventually grow around it. And an ending cannot tell us whether it will become the final wound in the trunk or the place from which another ring begins. The seed has already been planted. The fire has already happened. The scar is already there. None of this can be made untrue.

But the tree is still alive. And while it is alive, the last ring has not yet been written...

Maybe that is why courage matters now rather than someday. There are truths we can face while the people involved are still here. There are apologies that can still be heard. There are questions that can still be answered. There are confessions that can still release what has been sealed. There are memories that can still receive another layer of truth. There are endings that can still be given dignity. Eventually the tree stops growing. And then what remains is the record. Maybe the future never changes the past. Maybe it gives us one last chance to decide what happens next.