Original sentence: According to a theory (some would say a conspiracy theory) the Apollo moon landing was a hoax.All such evidence, however, is discounted by skeptics, who contend that those data could also be faked.Unlike some other conspiracy theories, this theory is claimed to befalsifiable
Edited sentence: According to a conspiracy theory the Apollo moon landing was a hoax.All such evidence, however, is discounted by conspiracy theorists who contend that those data have also been faked.Unlike some other conspiracy theories, this theory is falsifiable