Ahem . . .Need we bring up the specter of cyber-zombies once more. Imagine legions of the undead powered by Radioisotope Thermoelectric Generators commanded by an out of control AI.
How about the Quantum Tunneling Drive. The prototype was built but who knows what will happen if you switch it on?
How about the Quantum Tunneling Drive. The prototype was built but who knows what will happen if you switch it on?