Explanations by Discussion

I recently discovered the following type of explanation in which there's a dialog between two characters trying to solve a problem. They start at the most naive or basic solution to a problem, and then iterate on that design until they end up with something fairly complex.

I find these types of explanations very useful and wanted to collect and create more.

Here are a few that already exist from around the web:

• Kerberos - Distributed Authentication
• Web Security

And here are some that have been written for this repository:

• Password Authentication on the Web

Feel free to submit PRs with new content!