20:26
there's also etiquette/culture stuff too. like, if you take the same office, laid out the same way, with the same cubes...
... and you fill it full of people who religiously set their phones to vibrate as soon as they get in every day... wear headphones whenever they watch something on youtube... go to a conference room when they need to use a speakerphone...
... that's WAY DIFFERENT than if you fill it full of people who have speakerphone conference calls from their desks, gather together in groups to watch videos through speakers, and have their cell phones going off at full volume all the time.