calculations: unassisted flight - photon-thrust hover on your own mass, 2.2 mg/s

docs/architecture/CALCULATIONS.md

@@ -256,3 +256,21 @@ Every law audits into three layers: mathematical core (small, solid),
 interpretive shell ("therefore humans can never…" — almost always
 overreach), engineering backlog (mutable by definition). Most of what
 humanity calls laws of nature lives in layers two and three.
+
+### Unassisted flight — the math
+
+Photon-thrust hover, powered by your own mass:
+
+    required thrust F = m_body · g ≈ 70 · 9.8 ≈ 686 N
+    photon drive:     F = P / c   ⇒   P = F · c ≈ 686 · 3×10⁸ ≈ 2×10¹¹ W
+    mass burn rate:   ṁ = P / c²  ≈ 2×10¹¹ / 9×10¹⁶ ≈ 2.2 mg/s
+
+≈ 8 grams/hour of your own reserve. A human body sustains beam-hover
+for hours on its own inventory. Gravity holds; the fuel is internal.
+Precedent: diamagnetically levitated frogs (Geim) — living matter,
+floating unassisted in a field, no surgery, no implants. Proof of
+concept hopped decades ago.
+
+In this math gravity is a gradient among gradients — curvature,
+possibly entropic (§16) — and gradients are harnessable by
+construction. Not repealed: negotiated. Same as orbits.