[Spivak]

I think you nailed it that some data can’t really be anonymized. How could you anonymize emails, names, social security numbers, DNA samples?

You don’t have to use anonymized data all the time, it’s just that the requirements for handling and passing around such data is lower.

[Mary-Jane]

I don't understand the point though; if someone has the source data, what good is the anonymized data to them? What value is added by requiring more stringent safeguards on data that can't be anonymized this way?