The MIT Lisp Machine manual argues in favour of allowing users to patch internal details of classes:
miniblog.
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On the engineering effectiveness of shared internal communications, rather than siloed emails.
https://www.mattritter.me/?p=526
The Nintendo Switch has a clever way of preventing firmware downgrades: upgrading the firmware blows an internal fuse!
https://news.ycombinator.com/item?id=27202766
This means that the hardware knows a newer firmware exists.
You can learn a lot about your readers by looking at their referral links. In this case, the author can see different company-internal bug tracking URLs!
This enables you to learn about who has a problem that you're blogging about
