Tema D’Akra

The Gm in Sanhedrin 21 excuses the contradiction with the opinion of the Rabbis, between a widow’s pledge (where it requires a reason to read) and whether his heart will not turn (where it seems that the Rabbis does not require a reason to read) –
“And Rabbi Shimon said to you, ‘Why did you ask me to write this?’ He said, ‘He will not multiply wives for him and will be silent.’ And I believe, what is the reason? He will not multiply because he will not depart. He will not depart. Why should I have even one and give his heart away? Then this one will not be tolerated. But what I maintain will not multiply, even if it is Abigail.”
This excuse leads to absurdity – precisely when the Torah does not reveal to me the reason for the mitzvah/prohibition, I can demand a reason to read, whereas when it reveals it to me, I cannot – because if the Torah wanted me to demand, would it be silent and say nothing?