Sometimes, I tell a secret to someone. I'd like this person to keep it to himself. Then, because I'm a chatterbox, I tell this secret to someone else. Quickly, a few friends know the secret.
I need to be able to know which friends know what (notion of "shared" secret).
I wonder if people would think this is valuable.
Perhaps we can have the concept of "shared information" instead of secrets.
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Perhaps we can have the concept of "shared information" instead of secrets.