[shikon7]

From what I understand, only the sensitive data needs to be encrypted (e.g. your bank transactions). It is still possible to use public unencryped data in the computation, as the function you want to compute doesn't have to be encrypted.

[jmcqk6]

In a world where Target can figure out a women is pregnant before she knows herself due to her shopping habits, the line that separates sensitive data is pretty ambiguous.

[CannotCarrot]

Small correction: according to that story, it's before her father knows, not herself.