A guiding principle for many software engineers—”What you see is what you get” —means creating programs where the content you’re editing looks the same as the final product. But when you’re using generative AI (genAI) systems to 3D-print, say, a mug, you’ll likely get a cup that can’t hold your coffee. Why is that?A guiding principle for many software engineers—”What you see is what you get” —means creating programs where the content you’re editing looks the same as the final product. But when you’re using generative AI (genAI) systems to 3D-print, say, a mug, you’ll likely get a cup that can’t hold your coffee. Why is that?[#item_full_content]