I understand that I can use Copy Web Thought URL to generate a link to any specific thought in a public Brain.  For example, I just generated as such a link.

What I can't figure out is how the "u/1893" is able to include enough information to point to a specific thought in my Brain from the hundreds of thousands of other thoughts available through  I can understand how the actual URL of provides enough identifying information, but "u/1893?" 

I'm also wondering whether that same URL (i.e. will always work for that thought, or whether it's transitory in some way.



It works in a similar way as other URL shortening services such as or and is achieved by using a redirect on a domain name that is short, which links to the web page that has a long URL.


Yes, the URL will always be the same as long as that Thought exists.

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