“Mark Xu” is an unusually short name, so the message-ending might actually contain most of the entropy.
The phrases “my name is Mark Xu” and “my name is Mortimer Q. Snodgrass” contain roughly the same amount of evidence, even though the second has 12 additional letters. (“Mark Xu” might be a more likely name on priors, but it’s nowhere near 2^(4.7 * 12) more likely.)
“Mark Xu” is an unusually short name, so the message-ending might actually contain most of the entropy.
The phrases “my name is Mark Xu” and “my name is Mortimer Q. Snodgrass” contain roughly the same amount of evidence, even though the second has 12 additional letters. (“Mark Xu” might be a more likely name on priors, but it’s nowhere near 2^(4.7 * 12) more likely.)