Concerts are other worlds. In this world, an artist controls you with their music, their message, and you experience it all with others like you.
Auditions are other worlds. In this world, a stranger asks you to make yourself vulnerable with the hope that your life's work may suit their needs.
Mobile phones are other worlds. In this world, bulbs light up, speakers sound, and the device shakes to capture your attention and cause an emotional reaction.
A dinner party is another world. You cross the threshold of a door to someone else's abode to enjoy the fellowship of friends or strangers.
Diner en blanc is another world. You dress up in white, cook dinner, and walk to a public place carrying your table and chairs to dine, dance, and enjoy time with strangers. This world happens only once.
The beauty of the "other world" is found in the freedom it offers — the freedom to be something different, if only for a moment.
Try to see the other worlds that exist. There are lots of them. Enter them, explore, and then leave. Then, create your own.