Hey everyone, it's Anne. Every click on your computer, every swipe on your smartphone leaves a data trail.

Information about who you are, what you do, who you love. So much data about you, expanding constantly in the digital clouds.

So I guess the question is, do you care?

Would owning your data or having more digital privacy make your life better?

And what happens to all that data when you die?

Today, on to the best of our knowledge, the sum of our data.

Music the best of our knowledge, the sum of our data. It's to the best of our knowledge. I'm Anstrane champs. Somewhere, scattered across databases

in hundreds of thousands of servers, there are vast

reams of information about you.

What you buy, share, like, who you know, where you go, what you think, what podcasts

you listen to, maybe even your DNA.

It all adds up to the story of you in data.

So this all started in the late 60s and 70s with the invention of the modern database.

But this experiment of data mining, of unknown actors collecting information and making predictions about us,

while that you could argue had it start at a preschool.

I grew up in Berkeley.

My father was an English professor at the University of California, Berkeley.

Journalist Susanna Braslin.

The university ran a preschool called the Harold E. Jones Child Study Center, which was a laboratory

preschool where researchers and students at the university could study children.

And when I became a student there in

1972, when I was four,

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