It carries certain preconceptions.
Those closest to us.
Genetically close to us. Our family.
Geographically close to us. Those who live in the same place.
But neither of those are necessarily accurate. In fact, the opposite might be true.
Those who think the same way we do might be found miles away. And those that understand us best may be of no relation.
Close has many meanings.
Think of those closest to you.