Comment by defrost
It's true that they say that:
The Long Now Foundation uses five-digit dates, the extra zero is to solve the deca-millennium bug which will come into effect in about 8,000 years.
but the truth is more subtle, love it or hate it the five digits are part of a campaign to encourage people to think about humans in timescales a tad longer than a few decades at most.
It just sounds like a way for people to try showing how smart they are while in reality it just adds confusion to completely irrelevant discussions, such as this one.
I think the campaign does opposite of what it says. Using 5 digits limits your dates to dates to a maximum of year 99999. While not giving a fuck, using the digits needed to represent a year, works for all years. No one is clamping their years to 4 digits when they say '2024', they are just using the necessary digits needed for that year