Wikipedia:Articles for deletion/Celtic swimming system
as |non-notable, OR|original research, and borderline |nonsense or at least FT|"something I made up one day".  The only source for this being "a thing" is the editor's own self-published e-book, so this is basically promotional.  A deeper problem, aside from |conflict of interest, is that the central claim is essentially farcical.  Swimming "as entertainment or just effortless tread" in calm water by using already well-defined swimming techniques, like the various forms of backstroke listed, isn't a "swimming system", it's just typical recreational swimming, found all over the world where bodies of water are.  I'm a big ol' fan of lots of genuinely Celtic stuff, but this isn't among them.  Might as well define sitting around in pubs/bars with a beer and some friends to be "the Celtic drinking and socializing system", since it too spontaneously arose in the British Isles and north-west coastal Europe, just like this "swimming system" (and all over the rest of the world, just like this "swimming system
— User:SMcCandlish, 14:18, 6 November 2017 (UTC)
Stance: delete
Cited policy: WP:N||WP:NOR||WP:BOLLOCKS||WP:NFT||WP:COI (Wikipedia:Notability)