I think this is a good point.

In an interactive environment: you can iteratively build the expression up, and you have the right chunks of context in working memory as you do it. You'd still need to learn what the different functions/operations are; but in a one-line REPL the use of symbols would allow you to fit more on a line than using more traditional identifiers.

That avoids many of the things I'd be concerned about for writing code like this if I had to come back and read or modify it months later.

If you can tolerate the learning-curve though.

For comparison, I do appreciate that many (most?) Linux shell utilities and command-line programs in general have adopted standard conventions for arguments (-f for short, --full for verbose) which make it easier for people new to a program to take a cryptic command-line and look-up the full-versions of the abbreviated commands to see what's going on - PowerShell does the same thing with its strict aliasing of cmdlets. Unfortunately I can't see that K (or many other programming languages really) do the same thing, where a a short, cryptic program can be syntactically expanded to one using verbose syntax with no changes in program semantics (unless you count VB.NET vs C# equivalence, heh).

Is there any automated explainer tools for the K language for beginners?