The original call
Original year: 2019
2026 assessment
Scorecard verdict: Live / early
Live, and honestly still early. 3D-printed concrete is no longer science fiction — there are printed homes, printed military barracks, printed bridges and a real industry of printer companies in 2026. But it remains a fast-growing niche, not the way most buildings get built. The trend line is exactly where I pointed it; the volume just hasn’t caught up to the headlines yet. Directionally right, scale pending.