imagine you want to remodel your house, but you decide to put a team of programmers in charge of it.
The first thing the programmers will do is get a bunch of land and get a robot which can build an exact replica of your house, brick by brick, down to every detail. And the robot makes a replica of your house which we’ll call the master (replica) house. (Meanwhile, you keep living in your house.)
Then they get several plots of land, one plot of land for each programmer, and on each plot of land, they make another replica of the house (starting with the master replica), one house replica for each programmer.