... of many long-time Linux users and/or developers.

And by "many long-time" users, I of course mean myself. But to an extent the trend seems to apply as well to others, some quite accomplished and established.

Which, in the broader context of technical skills and abilities makes me wonder if professional in an increasingly technical, but faster-paced, world, will find themselves orbiting in and out of the arms of our technical galaxy goverened by equivalents of cellestial mechanics.

5/

The whole #DotOrg fiasco makes me wonder if we're doing domains wrong, and need to re-think them.

There's a legal concept "estoppel", that "bars a party from denying or alleging a certain fact owing to that party's previous conduct, allegation, or denial."

The transfer of the dot-org registry to a private venture firm, and lifting of renewal caps, exploits long-standing reliance on use of a signifier which can be revoked at any time.

What if this applied to personal names and identities?

The curse of the Euclidean metric: http://corner.mimuw.edu.pl/?p=1073

Krzysztof Fleszar posts about a big difficulty with algorithms for problems like Euclidean shortest paths where the answer is a sum of distances: we don't know how to compare two solutions efficiently.

Krzysztof's SODA 2019 paper on approximate TSP of hyperplanes (find a short tour that touches each given hyperplane) is https://epubs.siam.org/doi/10.1137/1.9781611975482.67 — fortunately in this case it's possible to use approximate numerical comparisons.

Paul Erdős died in 1996, but his most recent paper is from 2015, nearly 20 years later! There's a writeup at https://www.simonsfoundation.org/2015/12/10/new-erdos-paper-solves-egyptian-fraction-problem/; the paper itself is http://www.math.ucsd.edu/~ronspubs/pre_tres_egyptian.pdf

It's about Egyptian fractions – representations of rationals as sums of distinct unit fractions – and is motivated by the conjecture that it's always possible for all denominators to be semiprime. That's still open, but they prove that every integer has a representation with all denominators products of three primes.

Joined Nov 2018