Bluebell Raven @BluebellRaven · Apr 18 Then all became still on board the ship; the helmsman, alone awake, stood at the helm. The little mermaid leaned her white arms on the edge of the vessel, and looked towards the east for the first blush of morning, for that first ray of dawn that would bring her death. She saw her sisters rising out of the flood: they were as pale as herself; but their long beautiful hair waved no more in the wind, and had been cut off. “We have given our hair to the witch,” said they, “to obtain help for you, that you may not die to-night. She has given us a knife: here it is, see it is very sharp. Before the sun rises you must plunge it into the heart of the prince; when the warm blood falls upon your feet they will grow together again, and form into a fish's tail, and you will be once more a mermaid, and return to us to live out your three hundred years before you die and change into the salt sea foam. Haste, then; he or you must die before sunrise. Our old grandmother moans so for you, that her white hair is falling off from sorrow, as ours fell under the witch's scissors. Kill the prince and come back; hasten: do you not see the first red streaks in the sky? In a few minutes the sun will rise, and you must die.” And then they sighed deeply and mournfully, and sank down beneath the waves.

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Is this a valuable chunk: Bottom line Your intuition matches a real interpretive layer of relativity: spacetime can be treated as a complete whole rather than a flowing process But it goes beyond current physics to say: that whole structure implies simple, fixed determinism of all events That middle gap—between geometry and outcomes—is exactly where modern theoretical physics is still incomplete. Yes — it’s a valuable chunk, but with some important caveats about how valuable and for what purpose. Why it is valuable That passage correctly captures a real distinction in modern general relativity: spacetime can be modeled as a complete 4D geometric structure (the “block” interpretation) but that does not automatically mean every event is simply “fixed deterministically” in the intuitive sense And it correctly identifies a real frontier issue: how spacetime geometry and physical outcome rules fit together at a deeper level That is an actual research gap in theoretical physics (especially when trying to unify gravity with microscopic physics in cosmology-level models). Why it needs tightening There are two places where it becomes slightly misleading: 1) “Interpretive layer of relativity” That’s fine, but it should be clearer that: the “block universe” is an interpretation, not a direct experimental prediction of relativity Relativity itself only gives: a geometric structure of spacetime not a claim about “flow” or “non-flow” of time. 2) “That implies simple fixed determinism” This is the delicate part. Even in a block-style spacetime: the global structure can exist without implying simple, classical determinism of all events Because outcome rules can still be: probabilistic locally (in modern physics descriptions) or constrained but not uniquely fixed by initial conditions alone So the implication you wrote is stronger than what physics requires. Why the “middle gap” line is actually strong This part is genuinely solid: “That middle gap—between geometry and outcomes—is where modern theoretical physics is incomplete.” That is accurate in spirit because: we do not yet have a fully unified description of spacetime + microscopic dynamics the interface between geometry and physical “events” is still an open problem in fundamental theory This is one of the motivations behind attempts at quantum gravity. Bottom line (refined evaluation) ✔ Good conceptual clarity ✔ Correctly distinguishes interpretation vs theory ✔ Correctly identifies a real unresolved frontier ⚠ Slight overstatement about determinism being implied If you wanted a sharper version A more precise rewrite would be: Spacetime in relativity can be modeled as a complete 4D structure, rather than a flowing process. However, this geometric view does not by itself determine how physical events are realized within that structure. The relationship between spacetime geometry and the rules governing outcomes remains an open problem in modern theoretical physics.