I think I get it now.
The Beach didn't just focus on the pursuit of paradise,
but also the aspect of secrecy.
I guess some things have to remain a secret,
for it to be fully enjoyed in that sense.
Some things are just made that way.
A place, for example.
The Beach.
It was understood that the people working on their farms couldn't be as productive as they could be when more tourists/travellers arrived on the island.
"No more people," they warned.
They relied on them to be discreet about the island.
Also, if you think about it,
I'm sure if you found someplace really serene and tranquil,
you won't exactly want it to be bustling with hundreds of people or anything like that right?
You'd want it to remain as peaceful as possible to retain/preserve its original beauty.
I guess it doesn't just apply to places huh.