As the story goes, Neil Armstrong is sure that he said “That’s one small step for a man, one giant leap for mankind.” But we’ve got audio tapes, and we can’t hear the “a” before “man,” which means that his statement is syntactically odd.
Good news everyone. They found the missing “a.” He really DID say it, but the mics didn’t pick it up. Computer analysis of the recording shows where the missing indefinite article dropped out. Or something like that.
At any rate, now we can sleep easy. (Well… maybe not until they find those lost lunar landing video tapes.)