Here&#x27;s a though experiment I came up with several years ago:
Say one day you created a copy of the Earth and with that copy, it had the same population as the current Earth, and they were connected so you can travel between them easily.
I can see that these two worlds would need twice as many barbers as the current world. Would these two new worlds need twice as many Google&#x2F;Facebook&#x2F;etc. employees?