Gergely Orosz asks whether AI makes Big Upfront Planning viable again

Gergely Orosz asks on X whether Big Upfront Planning, the approach of planning a full project before building it, makes sense again with AI. He argues that waterfall planning failed because implementation was slow and plans went stale before delivery.

He suggests AI, which he says makes implementation roughly 100x faster or more, could change that trade-off. The post poses a question and does not report a test, study or outcome.