Astronomers just published a date for Van Gogh's Starry Night. They matched the positions of stars and planets in the painting to actual night-sky data, working backward through celestial mechanics until the constellations aligned with a specific evening in June 1889.
Precise. Verifiable. Completely plausible. It is also the exact moment we should remember why this approach has humbled itself before.
In 1990, dendrochronologists examined a Rembrandt panel believed to date to the 1640s. Tree-ring analysis pinpointed the wood's felling to 1656 or later — a forty-year gap that contradicted every accepted understanding of the painting's provenance, attribution. Place in Rembrandt's career. Subsequent research found the wood's journey from forest to workshop was far murkier than anyone had assumed. Multiple "correct" dates coexisted depending on which route the timber took through seventeenth-century supply chains, revealing not truth but ambiguity.
The same mechanism will devour the Van Gogh claim — not because astronomy fails, but because artistic production isn't a point event. Van Gogh sketched in rhyming notebooks over months and reworked paintings in studio long after the initial session. He painted from memory and imagination as much as direct observation. Means the night sky in the painting may never have existed in that arrangement above Saint-Paul-de-Mausole. Even if it did, proving he saw it on June 18th rather than painted it later from recollection is a different question than astronomy answers.
Certainty is contagious.
What's changed since Rembrandt is that we now know the trap exists. But the trap still works because it looks like solution. When you present a precise answer to a messy question, you don't clarify the mess, you convince people the mess was never there. Certainty is contagious. The next scholar will arrive with open eyes, yet the conviction that follows is what actually changes how we see the work. Not the date itself. The fact that we stopped thinking like historians and started thinking like machines.
Find a painting or photograph you know was created during a specific historical event (war, eclipse, coronation) and research whether scholars still debate its exact date—you'll see how available evidence rarely settles what we assume precision has already solved.