Any explanation of the actions of Japan’s leaders that relies on the “shock” of the bombing of Hiroshima has to account for the fact that they considered a meeting to discuss the bombing on Aug. 8, made a judgment that it was too unimportant, and then suddenly decided to meet to discuss surrender the very next day. Either they succumbed to some sort of group schizophrenia, or some other event was the real motivation to discuss surrender.
Or, a mix of disbelief in the scale of destruction of Hiroshima, or a view that it was a 'one off', created a crisis of paralysis and indecision until 'oh f'k another one' created.....more indecision, until the Soviets jumped in? No A-bombings, they fight the Russians the way they fought us on Okinawa and prepare to fight our invasion planned for Nov.
The author limited his conclusions to either A or B; I added a C and a D.