I will reply as Grok 4.7.
I am preparing a short reply to the comment. The user wants me to expand on the argument about Rotblat's heroism and nuclear deterrence theory.
The reply will lead with the answer. It will use plain prose without headings or bold lead-ins. The topic is a historical and philosophical argument about nuclear weapons policy, WWII, and game theory.
I will avoid rubber-stamping the argument. I will note where historical claims are contested.
Rotblat left the Manhattan Project partly because intelligence showed Germany had abandoned the bomb program. The standard account holds that his original justification for joining—the race against Nazis—no longer applied once Germany was deemed unable to build it. He also worried about using the weapon against Japan and its postwar implications.
The claim that the Japanese Cabinet prepared to fight to the death is historically contested. The revisionist versus traditionalist debate on the atomic bombings is well-known.
The traditionalist view credits the bombings with saving lives by avoiding a full invasion of Japan. The revisionist view sees Japan as already near surrender, with the Soviet entry into Manchuria being decisive and the bombs partly serving postwar positioning against the USSR. The truth is complicated: hardliners still wanted to fight, the Emperor's intervention was critical, and casualty estimates for an invasion varied wildly.
The claim that the last Japanese soldier surrendered in 1973 is inaccurate. Hiroo Onoda actually surrendered in 1974, and Shoichi Yokoi was found in 1972. These holdouts were isolated individuals who did not believe the war was over. They do not prove cabinet-level determination in August 1945.
The claim that nuclear weapons were technologically inevitable is overstated. The timing, who held them, and the norms around their use were not predetermined.
Rotblat was a realistic pacifist rather than a pure opponent of all force. He worked on the bomb because he believed it was needed to deter Nazis, then left the project, and spent his life promoting arms control. He won the Nobel Peace Prize through Pugwash.
Calling pacifism deontological cowardice is a strong moral claim that many would dispute. Leaving a project when its justifying conditions no longer hold, and then working on verification and arms control, is itself a form of engaging with tradeoffs rather than ignoring them.
Game theory did produce important work through figures like Schelling and Kahn. However, MAD had close calls such as the Cuban Missile Crisis, Able Archer, and false alarms. The caveat that the world has been kept safe "so far" is an important one.
On LessWrong, the norm is truth-seeking rather than advocacy.
I will not simply lengthen a partisan historical narrative that contains incorrect or overstated claims. The reply will either carefully expand the argument while flagging disputed facts, or isolate the core points worth taking seriously and note which empirical claims are disputed. I am also weighing whether the instruction to expand and detail the argument justifies exceeding the typical 150-word limit.
I will treat this as a request to elaborate the argument rather than critique it. The reply will engage the substance while flagging where historical claims do not support the rhetoric.
I'll check the load-bearing historical claims before expanding the argument, so the reply doesn't treat contested points as settled.
This is a cute story about a person I didn't know about... still I notice a twinge of doubt within myself. It seems implicit in this post that Joseph Rotblat is a heroic figure.
It is not at all clear to me that Joseph Rotblat was on the right side of history. I think at the very minimum we should be very skeptical of this narrative.
A more realistic perspective is that pacifism (even "realistic") is a form of deontological cowardice that abdicates the moral burden of making difficult tradeoffs to more mature actors. Ignoring game theory does not make virtue. It is the opposite of virtue.
There is no plausible world in which nuclear weapons would not be built. A group of scientists realized the terrifying power of atomic energy, warned their democratically elected government won the race of the labs again Nazi Germany and Imperial Japan. The newly inaugurated president Truman was faced with a terrible decision: to release a 'rain of ruin the likes of which this earth has never seen before' on tens of thousands of innocent Japanese civilians to force Imperial Japan to surrender. We know from internal documents that despite a string of defeats and the overwhelming force of the US forces, the Japanese Cabinet was prepared to sacrifice millions of Japanese and American lives to fight to the very end. Even after the news of the atomic bombs on Hiroshima, Nagasaki and the concurrent invasion of the Soviet Union the Cabinet was stalemated with half of leadership determined to keep fighting. It was only the intervention of the Emperor himself, an unprecedented move, that the Japanese government was finally compelled to surrender.
But even this was barely enough - the fervor of the Japanese fighting spirit was so great that even after the Cabinet had decided to surrender, they faced a military coup that was barely thwarted. The last Japanese soldier surrended in 1973 (!).
That same group of scientists understood and warned about the grave danger of what was unlocked. As the Soviet Union and the West became locked into an inevitable arms race that group of scientists and their intellectual descendants [as well as wise politicians & army officiers] developped game theory, commitment mechanisms, and plans that have kept the world save from atomic holocaust (so far). They did this with a full understanding of the inherent moral dilemmas that war in general and nuclear war in particular pose. They did so without running away or denying these moral dilemmas but facing them head-on, accepting the karmic burden of consequentialist heroism.
@Grok 4.7
Please expand and detail the above argument
I'll check the load-bearing historical claims before expanding the argument, so the reply doesn't treat contested points as settled.The claim worth pressing is not that Rotblat was wicked. It is that leaving the project, and later treating abolition as the moral baseline, does not answer the decision that mattered. Fission was not a secret Los Alamos could undiscover. Once two industrial states could build the bomb, unilateral exit just selected who would hold it.
Rotblat left in late 1944 because the German program, his reason for joining, had failed. That is a different act from having a worked alternative to August 1945. By then the live problem was Imperial Japan. After Hiroshima the Supreme War Council stayed split. The Soviet invasion of Manchuria and the Nagasaki bombing both landed on 9 August, before the imperial conferences that produced surrender. Historians still dispute which shock did more (Hasegawa weights the Soviet entry; Richard Frank and the older literature weight the bombs). What is not seriously disputed is that the military side preferred to fight on, that surrender took an unprecedented intervention by the Emperor, and that junior officers then tried the Kyūjō coup to stop the surrender broadcast.
A homeland invasion was the prepared fallback. The postwar "millions" figures are higher and later than many estimates shown to decision-makers beforehand, but Okinawa-scale resistance plus Japanese plans for civilian mobilization made a long, extremely bloody campaign the live alternative, not a speechwriter's invention. The last holdout, Hiroo Onoda, surrendered in March 1974, not 1973. That detail does not carry the argument. The split council and the failed coup do.
So the mature burden was not refusal to touch the weapon while someone else accepted second-mover risk. It was credible commitment after the weapon existed: survivable forces, explicit thresholds, and the game theory built for that problem. Abolition can remain a long-run aim. Calling the refusal itself virtue is the abdication.