Why is the file /bin/false so large?

[Chris Jones]

>   Yes and no, sh/bash/dash is probably already in memory for some
>  (many) shell-scripts. Since most of the memory is shared between
>  processes (read-only memory of processes and libraries is shared),
>  memory footprint won't change much whether you launch this script
>  or not.
> 
>     Whether this is a sensible idea or not, I leave it to more
>  knowledgeable people.

True, but the same logic applies to a binary /bin/false (once it has ben used once) ...