Excellent presentation from nostr:npub1xf7pnv2ncxsmtrc4ht50xz8j8wd3un0g3c9ecjza3pg596k4tvvs6cua9j. If you don't have a nym, it's a must listen!  nostr:note1838ajmhh3p8yqfxx2gswuw3c6flexn0ymrshqlk8m354qe2tu6dsc4g40c