The surface rumbled after every alien weapon thump or zap.

"How long can we survive here, Jennifer?" asked her husband, Frank.

"Indefinitely. We designed this forcefield using unrestricted AI."

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"Your team could have stopped this alien invasion if only ..."

"I believe so." She frowned. "If the world governments hadn't halted all AI development. We were on the cusp of the Singularity."

"How would it have helped?"

"It would have been able to design a permanently self-energizing forcefield to protect our entire planet, but there wasn't enough time to design one with our currently dumbed-down systems. Post-Singularity? Within minutes ..."