They invented the paper machine so they could mass-produce paper-- it didn't have to be handmade anymore-- and they invented wood pulp paper so it didn't have to be made out of cloth anymore.

于是人们发明了造纸机从而可以大量生产纸-,而不再需要手工制作-,后来人们还发明了木浆纸,所以后来不再用布料来制纸。

耶鲁公开课 - 金融市场课程节选

For this year's general election, Nevada is the only state where virtually every voting machine has a paper backup that could aid in a machine malfunction, an audit or a recount.

CNN: Nevada improves odds with e-vote

"Without a paper trail attached to a voting machine today, I think any election would be suspect, " Heller says.

CNN: Nevada improves odds with e-vote

Then you wait in a third line to hand somebody the handwritten ID form and have your paper ballot optically scanned by a scanning machine.

FORBES: New York's New Voting System Is a Disaster