3 ms·
I don't really understand this. Who is hiding what from whom? Is the idea that the outside observers can discover that either Alice or Bob said no, but not know
by SamBam 4y ago
I don't really understand this. Who is hiding what from whom? Is the idea that the outside observers can discover that either Alice or Bob said no, but not know which one?
Why do that with five cards? Why can Alice and Bob not just hand a single card to you, saying "Yes" or "No". You then mix the cards and reveal them. Now you know if there's a "No" but not who said it.
- grraaaaahhh 4y agoJust using single cards will let bystanders know when both Alice and Bob say "No". The 5 card solution makes it impossible to differentiate between when both say "No" and when only one says "No".