Cindy asked her father, "Papa, was it true people didn't last forever?"

"Yes, that's true. For a long time since the beginning of humankind, people could not avoid death."

"Like the animals?"

Her father nodded.

"Why do we live forever now, Papa?"

"Biological and genetic engineering, and nanotechnology. Plus, ever since we developed the wormhole generators, we can explore the cosmos at will. So, resources and over-population aren't a problem like in the past."

"But Papa, my teacher said some people will still die."

"Oh yes, that's true. We still have the occasional anti-vaxxers, but they pay the steepest price."