Julia and her great grandfather sat near a fire pit:

“Grandpa, my teacher said people used electronics for things.”

“Oh yes, before the slam.”

“Slam, Grandpa?”

“Yes. A hiker, also a quantum physicist, enjoyed an isolated trail, but his secret got out on social media.”

“Social media?”

“Gatherings of people without meeting face to face.”

“Wow! And the hiker?”

“Oh right. He silenced others’ loud devices on his hikes, using his quantum-entanglement field disruptor invention.

“And?”

“Well, as he mentioned—all the sudden ‘slam!’ the world went dark. People enjoyed the simplistic tranquility so much that no one rebuilt technology.”