It is vastly more destructive than IP v4. This affects end users directly, every single day. The number of times applications have crashed due to NULL related errors is probably in the tens or maybe hundreds of billions. Each time is an interruption of people's work and in some cases it destroys hours of work.
Re:What is wrong with NULL
by dragonwriter on Monday August 31, 2015 @06:36PM
(#10149540)
> NULL isn't even visible to end-users
In the same way HIV isn't visible; sure, the cause isn't visible to most people, but the adverse effects are.
Exaggeration much? Certainly not "the worst mistake of computer science". IPv4 is much worse, just for one example. NULL isn't even visible to end-users, many mistakes in CS are quite visible and really impact non-programmers' lives. NULL is just the color of the wallpaper in the engine room.