You can get the gist when someone said a sad face or a thumbs up. So, why haven’t see fully adopted this way of communication? After all, English is a difficult language to master.
Because context matters. And the better we can describe something that a six-year-old can comprehend and an adult can contemplate, the more likely we are able to change our minds.
Yes, an emoji could get the point across. And perhaps, we need to add a like button on an email chain to avoid unnecessary clutter. But we don’t change people’s opinions without changing the emotion in the room. Emojis can’t ever do this.