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Let's Know Things

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Let's Know Things

Colin Wright

News Commentary, News

4.8593 Ratings

🗓️ 23 February 2021

⏱️ 25 minutes

🧾️ Download transcript

Summary

This week we talk about cookies, ATT, and IDFAs.


We also discuss Federated Learning of Cohorts, targeted ads, and Facebook.



This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit letsknowthings.substack.com/subscribe

Transcript

Click on a timestamp to play from that location

0:00.0

The term cookie, as in web cookie, began its life as magic cookie. A bit of jockey jargon used by Unix developers

0:24.7

to refer to a packet of data shared between machines or programs, often to check whether one

0:31.5

had the permissions required to access the other, or to access some hidden compartment of that other machine or program.

0:40.3

This concept was applied to the internet in the early days of the web, when a developer working

0:45.3

at Netscape, the maker of one of the earliest, most popular, graphical web browsers, was tasked

0:52.3

with figuring out how to enable e-commerce without requiring the host of the

0:57.2

site doing the selling to maintain a stable of temporary partial sales states. Basically, they didn't

1:05.2

want to use up tons of space and processing power on their own computers for gobs of not yet complete purchases,

1:13.2

storing information about what's in the shopping cart and things of that nature.

1:17.3

So they asked for another way of accomplishing the same thing

1:21.0

that wasn't so resource intensive for the owner of such sites.

1:26.4

That developer, an employee named Lou Montulli, thought it might be possible

1:31.9

to use this magic cookie concept for the web as well, and he wrote the first specification

1:38.1

for accomplishing this saving of states on the users machine in late 1994. As a result of this innovation,

1:47.8

which he patented in 1998, in web parlance today, a cookie is a tiny bit of data stored on

1:56.0

one computer that allows it to tell another computer something about its state. On a practical level,

2:03.7

this typically means a user visits a website that website downloads via the browser a small file

2:11.3

or code snippet onto that user's computer or checks the state of an existing bit of data of the same kind.

2:19.7

And from that point forward, that code, that cookie, serves as an identifier for the user's computer

2:26.0

when they visit that site and often other sites as well.

2:30.0

When this standard first rolled out to the public in 1994, and then more broadly, across more

2:36.6

browsers in 1995, it wasn't something that the average person had any reason to know about,

...

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