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Re:Ask HN: Which sites you visit on a regular basis for know... by hithereagain on Saturday July 08, 2017 @10:58AM (#14725601)
If you start with Mathematics, you'll end up in a loop: Mathematics > Quantity > Magnitude (mathematics) > Mathematics.

Ignoring this backlink, though, it would work:

Mathematics > Quantity > Magnitude (mathematics) > Mathematical object > Abstract and concrete > Referent > Linguistics > Science > Knowledge > Fact > Verificationism > Philosophy

Re:Ask HN: Which sites you visit on a regular basis for know... by amenod on Saturday July 08, 2017 @03:03PM (#14726719)
Also, starting with https://en.wikipedia.org/wiki/2003_Internationaux_de_Strasbo... (random page) you get into loop around "Languages".

But if the algorithm should ignore the already visited links then it would probably work because the pages usually describe something using the higher level concepts first. The question is how much larger the pool of "always found" pages becomes.