Just like with Y2K a lot of things are proofed already. But to avoid things falling over, everything has to be proofed. Not just the kernel, also file formats,

Just like with Y2K a lot of things are proofed already. But to avoid things falling over, everything has to be proofed. Not just the kernel, also file formats, file system formats, programming languages and libraries and applications. That’s a big project with a lot of players and we won’t know if they all did their job right until the clock rolls over.