If you do not know clearly that it is <a field where a treasure is buried>,
you will not know ‘the necessity’ of buying it.
So, even if it were offered to you for half price,
you will give reasons for not buying the land, make excuses, and not buy it.
Then, when someone who knows tells you clearly that
“That field is the (a?) field with treasures buried in it,” you will even get a loan
that very day if you have to, run after them, and beg them to sell it to you.
Rather than telling people to just do something, instill ‘the necessity’ into them.
This is ‘the core.’ This is ‘the key.’