Optional
"While the enormous mass of the finding on the Moon speaks to something somewhat larger and more blobby than Clarke’s neat 1:4:9 object, poked at by a fictional Heywood Floyd, in the interests of whimsy we'll give it a pass. Although the fact it also wasn't found in the relatively youthful Tycho crater either threatens to snap the increasingly tenuous link."
You can't expect the man to be that accurate. Who do you think he was? Agnes Nutter?