For the Y2K, we weren't allowed to change any of the original code running on the AS/400. That code was always off-limit, and had existed since the 1970s as far as I know.
We created an intermediate tool that would look at transactions going into and out of the database.
When data was coming out, we'd convert the dates to 4-digit years. Then when data was going in, we'd convert 4-digit years back to 2-digit years.
I have no idea if 26 years later that is still in place. I suspect so. But the thought that banks will authorize AI and "vibe coding" to magically replace all this off-limit code running on the back end is hard to believe.
Stéphane Charette 🇨🇦
npub19x…zzcsf
2026-02-24 20:01:10 UTC
Author Public Key
npub19x5vusu9tespz56a2v2d0h8um0uvmnad2km0akd0f5zc26c8qvpqqzzcsfSeen on
wss://relay.ditto.pubPublished at
2026-02-24 20:01:10 UTCEvent JSON
{
"id": "865bdbcdd9eb1b90874afacd7532e090e16d652a354016d5ad2280717915e107",
"pubkey": "29a8ce43855e6011535d5314d7dcfcdbf8cdcfad55b6fed9af4d05856b070302",
"created_at": 1771963270,
"kind": 1,
"tags": [
[
"proxy",
"https://mstdn.ca/users/charette/statuses/116127384919473905",
"activitypub"
],
[
"client",
"Mostr",
"31990:6be38f8c63df7dbf84db7ec4a6e6fbbd8d19dca3b980efad18585c46f04b26f9:mostr",
"wss://relay.ditto.pub"
]
],
"content": "For the Y2K, we weren't allowed to change any of the original code running on the AS/400. That code was always off-limit, and had existed since the 1970s as far as I know.\n\nWe created an intermediate tool that would look at transactions going into and out of the database.\n\nWhen data was coming out, we'd convert the dates to 4-digit years. Then when data was going in, we'd convert 4-digit years back to 2-digit years.\n\nI have no idea if 26 years later that is still in place. I suspect so. But the thought that banks will authorize AI and \"vibe coding\" to magically replace all this off-limit code running on the back end is hard to believe.",
"sig": "9a6887e415e3de29722abba8f5142a4a3b802453c4ecb7ac52d21826c06161bef22242703d51dba1e36531f74e070e054f51be7a71905abc42713b95bd24b7f7"
}