"The hammer in question was probably dropped or discarded by a local miner or craftsman within the last few hundred years, after which dissolved limy sediment hardened into a nodule around it."
This is a way better article that Wikipedia:
Creationist two-button dilemma:
Button #1: The Earth is only 6000 years old.
Button #2: The London Hammer is encased in 400 million year old rock.
Nah, it's proof scientist cannot accurately date objects. Meaning all evidence for geology, archeology, paleontology and the like are false. Meaning the Bible is the only accurate measure for the age of the earth.
I always find the real story way more interesting than "Ohhhh.... Isn't it mysterious!?"
The stone is real, and it looks impressive to someone unfamiliar with geological processes. How could a modern artifact be stuck in Ordovician rock? The answer is that the concretion itself is not Ordovician. Minerals in solution can harden around an intrusive object dropped in a crack or simply left on the ground if the source rock (in this case, reportedly Ordovician) is chemically soluble (Cole, 1985).
TIL: there's something as dumb as a creationist museum
Dirk Gently seems a better fit.
Well, if that's not proof of time travel, what is, eh?