It's the long now foundation thing. The long now foundation encourages writing years with five digits to encourage readers to think about long term planning, to

It's the long now foundation thing. The long now foundation encourages writing years with five digits to encourage readers to think about long term planning, to plan for a future of humanity that is measured in more than thousands of years. https://en.wikipedia.org/wiki/Long_Now_Foundation https://en.wikipedia.org/wiki/Long_Now_Foundation