An interactive experiment in seeing time as selection, not motion
There’s an idea at the center of our work that sounds strange the first time you hear it: nothing actually moves. What we call motion — a ball arcing through the air, a piece sliding across a board, a life unfolding — is a way of experiencing a set of states that already form a structured whole. We don’t travel through time so much as we select our way through it.
That’s a hard thing to argue in prose. It’s a much easier thing to hand someone. So we built two small interactive pieces to let you feel the idea instead of just reading it.
The picture in one minute
The first experiment treats reality as a literal film reel — a strip of already-printed frames. Drag the playhead and you become the “now,” the single frame the projector happens to be lighting. Turn the projection rate up or down and the movie’s length changes, even though the reel itself never does. The runtime is a property of how you watch, not of what’s there.
Then you can change where you stand. Step out of the audience and ride through a row of theaters, each showing one frame, and you’ll feel motion again — except now the motion is yours, the result of traversing a fixed set of frames. Step behind the screens entirely and you see all the frames at once: no motion at all, just a structured array of states. That last view has a name in physics. It’s the block universe of relativity, and in quantum theory it shows up as time emerging from correlations rather than flowing on its own.
The chessboard metaphor — and playing it backwards
The second experiment is the one we’re most excited about, because it turns the idea into something you can do.
Picture reality not as a film you watch but as a library of chessboards. A “move” was never really pushing a piece — it’s selecting the next legal board from the set available to you. Your choice instantly becomes your new local state. (Physicists will recognize the shape of this: it’s collapse, described for the rest of us.)
Forward, this gets overwhelming fast. From the opening position there are 20 legal next boards, then 400, then 8,902, then nearly 200,000 — the branching is genuinely unmanageable. So we don’t plan forward. We plan backward.
In the experiment you first fix the ending. Choose your horizon on a ladder that runs from the immediate next board (Global) all the way out to the creative, open-ended future (the Infinite state) — and the nearer checkpoints set themselves automatically as sub-goals. The possible endings aren’t stored in a database; they’re generated on demand by a function, paged nine at a time, so you can browse an enormous space of futures without us ever having to hold them all at once.
Pick one, and something quietly profound happens. Switch to play, and every legal move on the board is now evaluated against the ending you chose. The board shows you the optimal trajectory — the route pinned between where you started and where you’ve decided to go. Stay on it and you’re on track. Wander off and the system reroutes you, showing the way back. And sometimes — this is the honest part — you’ll make a choice that puts your chosen future out of reach entirely. The branch has collapsed. You’re told plainly, and invited to fix a new ending and begin again.
That is the whole philosophy in a single mechanic: outcomes are constrained by where you began and by the future you commit to. It’s time-symmetric. It’s decision-ready. And it’s a surprisingly hopeful way to think about hard problems — cease-fires that hold, guardrails that build trust, aggression converted into shared work. You don’t grind forward hoping things improve. You fix the cooperative ending first, then prune every move toward it.
Why we made it
These are small experiments, but they’re not toys. They’re arguments you can hold in your hands. The film reel makes the case that motion is a vantage point. The chessboard makes the case that agency is selection — and that the most practical thing we can do, faced with an explosively branching future, is to choose our destination and let it discipline our next step.
Try them both. Fix an ending. Then play your way back to it.
Michael Tulsky, Lucid Founder
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