[dextorious]

"""Most software are outdated after a couple of years."""

You'd be surprised. Tons of code runs in production, even in the latest of shiny systems, that was written 10 and 20 and 30 years ago -- either in whole or in parts, refactored etc.

From 1986's NeXT OS that is now OS X Lion and iOS 5, to Bill Joy's TCP/IP, to Emacs.

And tons of enterprise/banking/financial/military systems use ancient code, even 70's COBOL...