Instructions for building a box anyone could pit together for $20 in common materials with a button that would end the world would be a fairly unambiguously evi

Instructions for building a box anyone could pit together for $20 in common materials with a button that would end the world would be a fairly unambiguously evil artifact. H-bombs as a much more expensive version that is arguable thanks to the somewhat lasting peace they can be argued to have brought through MAD, but if it had turned out world enders were something anyone could easily throw together it would be a very different world, or non-world.