Would I be right in assuming that all executions happened at day?
If so, then the man cannot be executed, because his sentence is logically inconsistent.
Suppose he is sentenced on the 1st of January. If he lived until the night of the 7th, he
would know he was going to be executed the next day, because he must be executed within
the seven days.
This is not allowed, since he would know his date of death in advance. Therefore he cannot
be executed on the 8th. As he knows this, he would know his date of death on the night of
He follows this line of reasoning back through the days, and since he is alive today, he knows
that he cannot be executed tomorrow, since he would know tonight, and not today, since he
would know now. He can neither be executed outside nor withn the seven days, because that
would contradict the first and second parts of the sentence respectively, so the sentence is
null and void.
I think this is the reasoning required, but I also think they would just kill him anyway. Once
he says 'I'm saved!' the executioner comes for him. Since he was expecting to live, say, for
many years after this date, this comes as a surprise so fulfils the requirements of the
sentence. Alternatively, if he is sentenced at night, he could be told 'you will remain in the
Tower until the day you die', which he will think is a life sentence. In fact it does not
contradict his earlier sentence, so he could be taken away and executed at any time in the
next seven days, at which time he would be taken by surprise (though at least this way he
isn't tortured by the prospect of imminent death!). All that matters is that he THINKS he is
not going to be executed.