Instead of switching to unsigned 32 bit int to buy another 21 years, they should switch to 64 bit ints. Or even 64 bit double - inside every double is a 53 bit

Instead of switching to unsigned 32 bit int to buy another 21 years, they should switch to 64 bit ints. Or even 64 bit double - inside every double is a 53 bit int hiding in plain sight! That would buy them another 90073970 years.