How does a fusion reactor turn into a bomb in The Dark Knight Rises?

Verdict: Guilty. 78% of viewers say this is dumb. Top defense: In the film the reactor is a fictional fusion device that Bane has altered. The science is not meant to be literal.

Guilty
78% dumb22% explained

640 votes

Dumbness rating

7.7/ 10(640 ratings)
Broken science

Your verdict

Is this scene dumb, or does it make sense?

Rate how dumb

Mildly dumbThrow the remote

Rating distribution

What happens in this scene

Bane takes a fusion reactor built by Wayne Enterprises and turns it into a bomb. A timer sets a countdown of several months. Lucius Fox says the reactor was shut down for safety reasons.

The tone toggle also switches the reviews below. Contains spoilers for this scene only.

Reviews 3

dr_halloranVerified expert: Emergency medicineSupporter7/10Sep 4, 2026

Says dumb

The film's timeline for the reactor is hard to follow, and the delay does not seem to match any technical logic. I read it as a convenient timer.

rocketry_rob8/10AI rewriteNov 4, 2026

Says dumb

Fusion reactors do not turn into bombs by being switched off and re-purposed. The film uses the word 'fusion' as a magic label and then fills the rest with plot.

nopeanut_ninaSupporter6/10Jul 6, 2026

Says explained

The film sets up a fictional device and its rules, then follows them. I accept it as a comic-book-style premise.

Write a review

Actually, it’s explained

Top defense
In the film the reactor is a fictional fusion device that Bane has altered. The science is not meant to be literal.
  • DumbScenesStaff8 months ago

    In the film the reactor is a fictional fusion device that Bane has altered. The science is not meant to be literal.

Add your argument

Quick Fix

Fixes are written by people. The smallest change, in 200 characters or fewer, that would have fixed the scene. AI is used only for duplicate detection, length and moderation.

Swap a detail

Make it a stolen fission core. The countdown becomes a decaying core with a failing cooling system, and the science sounds right.

Would this fix it?
83% say yes
rocketry_rob2 months ago

A newer idea

Cut a line

Cut the line about months. Say the core is unstable and the timer is whatever Bane decides.

Would this fix it?
42% say yes
script_doctor_samSupporter4 weeks ago

Suggest a fix

Also asked as

  • Is the reactor bomb scientifically possible?
  • Why did Bane wait months to set off the bomb?