What I mean is, imagine you're in a restaurant, you're having a conversation, there are all kinds of other conversations going on in the restaurant, you want to filter them out, you want to focus on what's important to you.
Képzeljék el, hogy étteremben beszélgetnek valakivel, de ott mások is csevegnek, és önök ki akarják szűrni őket: a fontos dolgokra akarnak koncentrálni.