Title text:
“A reusable elevator would also be great because we’d save so much on the bulky and expensive shields that people currently use to avoid bruises and rug burns when sliding down the stairs.”
Transcript:
Transcript will show once it’s been added to explainxkcd.com
Source: https://xkcd.com/3319/
Unreliable elevators?
Kinda yes, because energy grid can go off due to planned and unplanned shutdowns.