Parallel Structures on Nostr: Why?

{ "id": "fd636189f211ef6f5da9f877f9673e95acaca055f7afb396a9fecfb5ed91ded0", "pubkey": "04387dde301d4e00dded8328bdb1043bca5d978daa7c11a0fc267e4f4fec7605", "created_at": 1740841747, "kind": 1, "tags": [ [ "e", "ae08c6f13297b559da4118d063fc580bf2725e5fed364e42dfce765f811b0df4", "", "root" ], [ "p", "958a514eed5da3b6551fd514d117c8af3b7395942a962d508f325dbc366e5e93" ] ], "content": "Why? ", "sig": "f1b35beeeb12bfcb178013234c8b6360585fb9d85589ae45e50b92f612b067fb61d0575df37f1609fbd7461754b3faebc3f66e56a5ec8a520a356d89d463c4bc" }