You ruined my fun! I wanted to him to realise himself how stupid he is. 'Nuclear' is an umbrella term used to describe hundreds of fission/fusion based weapons. Little boy was Uranium and Fat Man was Plutonium, but both are nuclear weapons due to the fact that it is a nuclear reaction. Hydrogen bombs can be considered different but they often aren't.
It comes down to how pedantic you want to be.
The nukes had little do to with the surrender, the US had been tactically firebombing for 5 years which - due to the main building materials being paper and wood - burned the civilian sections of cities to the ground.
Look, It is not that simple. You have to understand that your education on the war is based on your education system. When i studied american history all the Americans in our class were astounded but what you don't get told, but which is readily available and published by localised authors in the rest of the world. As Ze said - the victor writes the history. And from what i saw going around the smithsonian, you guys have done a good job at writing your own history. I am not saying that the same thing doesn't happen here, it wasn't until I was 18 that I was finally taught that not all Germans are evil (not joking, but i had drawn that conclusion sometime before).
But we are objective about our history - probably because we lost it all and 'the victor writes history'.
Try looking at it this way. At Yalta the soviet union agreed to enter into a war with japan within two months (iirc) of the end of the european war. When little boy was dropped it was 2 days until the end of those two months, the next day the USSR declared war with japan.
Also why was the second bomb dropped? There was no need to drop a second bomb - absolutely no need. If i get into this i will be typing and ranting for a long time.
When you look at the dropping of those bombs, you have to remember that its the start of the cold war and tensions had been rising between the soviets and the US for a long time.
Another interesting fact - The only reason that the cold war didnt go nuclear was because after the bombings of japan no one wants to use them again, right? wrong....
During the fall of french indo-china, france asked for help from the US to deal with vietnam - the US offered to drop two nukes on vietnam. The agreement went along the lines of - if the UK ratifies this we will do it. Eden basically said 'are you fucking crazy?'. And it didnt happen. But had it, then the taboo of using nuclear weapons would be completely gone and it would have been a free for all.
Bet you don't get taught that at school!