Compute is the engineered and economized manifestation of energy fused with information — the ultimate quantified expression of that fusion. Compute ≈ Energy Input × Efficiency. At its core, compute is humanity's way of taking the raw process of energy-driven information processing and turning it into something engineered, massively scaled, and precisely measurable. Compute is the physical embodiment of energy and information coming together. Looking ahead, we'll likely see even more advanced concepts emerge. Intelligence, for instance, may represent the next evolution: the powerful combination of "energy + information + goal direction + self-optimization."