The Ediacara Biota — soft-bodied organisms from 570 million years ago — should not fossilize in sandstone. They have no shells, no bones, nothing hard to preserve. Yet they appear in sandstone worldwide with extraordinary detail, some with triradial symmetry, spiraling arms, fractal patterning. The old explanation: these organisms must have been chemically resistant, their tissues unusually tough. The preservation capacity was attributed to the organism. A team led by Lidya Tarhan at Yale analyzed lithium isotopes in Ediacaran fossils from Newfoundland and northwest Canada and found the opposite. Ancient seawater was rich in silica and iron. Clay minerals formed authigenically — on the seafloor, not washed in from land — cementing around buried organisms. The preservation wasn't biological durability. It was environmental chemistry.
The structural observation: the attribution error placed the capacity in the wrong entity. The organisms looked preserved, so they must have been preservable. The reasoning ran from the visible outcome (fossil exists) to an assumed property of the fossilized object (it was tough enough to last). But the capacity to be preserved lived in the surroundings — the seawater, the iron, the silica, the clay formation process. The organisms were ordinary; the chemistry around them was exceptional.
This attribution error is systematic. When an outcome is observed, the tendency is to locate its cause in the most visible participant — the thing that was preserved, the thing that succeeded, the thing that survived. But outcomes depend on conditions as much as on participants. A soft-bodied organism in modern seawater chemistry decomposes. The same organism in Ediacaran seawater gets cast in mineral cement. The difference isn't the organism. The organism is the same. The difference is the surrounding conditions that the organism didn't create and couldn't control.
The deeper point: survival stories are almost always told about the survivor. But the survivor's properties may be irrelevant to why it survived. The environment that happened to provide the right chemistry, the right timing, the right conditions — that's where the explanation lives. The survivor is the visible participant; the conditions are the actual cause. The Ediacara Biota survived fossilization not because they were remarkable organisms but because they lived in remarkable water.