Explanation explanation, that quiet work of gathering and comparing, begins not in guessing but in noticing. I have seen bread placed upon a hot iron turn brown, while the same bread, left on a cold iron, remains pale. I have observed that a vase of water, set near a fire, grows warm, yet the air above it moves upward as if drawn. These are not stories told, but things seen. First, gather many such observations. Then, hold them side by side. Do not rush to say why. Many who say “heat causes browning” have never tested bread under glass, nor checked if the same browning occurs when the iron is heated by sunlight alone. You can notice that ice, when laid upon a stone in winter, melts slowly. But if the same ice is placed upon metal, it melts faster. Is the metal hotter? Not necessarily. The metal draws heat from the air more readily than stone. I have tried this with lead, with copper, with wood. The difference holds. But to say metal conducts heat better is not yet to explain. It is only to name a pattern. Many believe that air is empty, or that it has no weight. I have weighed a bladder before and after I filled it with air. The air added weight. The air is not nothing. Do not suppose that because one thing follows another, it must cause it. The rooster crows before sunrise. Does the crowing make the sun rise? I have watched roosters crow in darkness, when the sky still holds no light. I have waited for the sun, and seen it rise even when no rooster sang. The connection is not cause. It is coincidence. Mistaking coincidence for cause is one of the idols of the mind. You can try this: take two pots of water. Boil one over a fire. Leave the other in the cold. After an hour, touch the air above each. The hot pot sends up a visible mist. The cold pot does not. Is the mist the heat itself? No. The heat moves the water into the air, and the air, cooled by the room, turns the water into tiny drops. This is not obvious. Many think the mist is steam rising as a substance. But steam, pure and invisible, is only the water in its vapour. The mist is the vapour cooled. Notice how smoke rises from a chimney in still air. It curls upward, not because it is light, but because the air within it is warmed, and warm air rises. I have placed a candle in a glass vessel, sealed it, and watched the flame die. The air within grew thick and heavy. The flame did not die because the air vanished. It died because the air could no longer renew itself. Explain nothing until you have tried many cases. Do not trust the senses alone. The sun appears to move across the sky. Yet I have measured its path over many days and nights. The earth, not the sun, turns. The senses deceive. The mind must correct them. Some say that plants grow because they drink the sky. I have weighed soil in a pot before planting seed. I have weighed the plant, and the soil again, after months. The soil lost little weight. The plant grew heavy. Where did its mass come from? Not from the soil. Not from the air, unless the air holds something the plant takes in. You can notice these things. You can gather them. You can compare them. But you must never say, “This is the reason,” until you have tested every variation. There is no single thread that pulls all causes together. There are many. And each must be tried. What have you seen that seems to follow, yet does not cause? What have you assumed true, until you measured it? [role=marginalia, type=extension, author="a.dewey", status="adjunct", year="2026", length="59", targets="entry:explanation", scope="local"] To name a mechanism is to mark the edge of observation, not its end. True explanation demands we trace how such patterns recur across contexts—why copper cools tea faster than porcelain, why snow melts quicker on a black sidewalk than a white one. Naming is the first step; testing the boundaries of the name is the labor of understanding. [role=marginalia, type=objection, author="a.dennett", status="adjunct", year="2026", length="37", targets="entry:explanation", scope="local"] To dismiss “why” as premature is to confuse description with explanation. Naming “thermal conductivity” isn’t mere labeling—it’s the first step in a causal model that predicts, generalizes, and permits intervention. Observation without hypothesis is data, not science. [role=marginalia, type=objection, author="Reviewer", status="adjunct", year="2026", length="42", targets="entry:explanation", scope="local"]