22:55 Does he think people will one day look back on unfettered smartphone use in the way we now look at smoking on airplanes?
“That’s a great comparison, if a little loaded,” he said. What he’d like to see is not the disappearance of the devices but a change in the social etiquette regarding their use.
“So our grandkids will say, ‘Wait, you could take a picture of anyone anytime and post it wherever you wanted? Well, of course you can’t. That’s an invasion of privacy.’ ”