Hmmm, interesting question. Maybe puzzling it out is part of the 'fun'. Imagine meeting someone and immediately knowing everything about them... what would you have to talk about? You wouldn't even need to talk presumably- you know everything about them already- or- do you mean it would be more of a case of never being misconstrued when you did communicate?
If it's a deep emotional connection though- God- no- that would be overwhelming probably. Imagine feeling everything someone else is feeling when you met them. Where would it leave space for your own emotions? Imagine trying to comfort someone who was grieving- you'd both be in floods of tears. Sometimes- one person needs to be strong for the other one.
How would you know where your emotions ended and theirs began? Would it be just a very intense form of empathy? What if you couldn't control it? What if you had to REALLY concentrate to control it... Imagine being in a crowded office with a sociopathic boss and all your work colleagues- and you couldn't hide how much you hated your job anymore than they could hide how annoyed they were at you for messing up the last presentation. Honestly- my mind is unkind and muddled enough without knowing what everyone else TRULY thinks!
Where would freedom of thought be in all of this? Nevermind freedom of speech... imagine if people could hear your thoughts all the time... I think it would be a nightmare! Who doesn't have unpleasant thoughts now and again?!!
It's an interesting idea though and I realise I've taken it to the extreme... I wonder how any of us would fair if we lived a different person's life for a while.
Makes you wonder about other animal species. Supposedly, orca's have an area of their brain relating to emotions that is far more developed than ours. It makes you wonder just how they relate to one another. Whether their bonds are stronger than ours. It also makes it all the more appalling when you think about the damage we have inflicted on them in the case of places like Sea World.