Help! Boss wants to know why ILE?

<snip>
It's not that the boss wants to stop us from using ILE, she just wants
to
know what makes it so much better than plain 'ol RPG IV that she should
invest the man hours it's going to take to bring our whole dept up to
speed on ILE. And I just am not coming up with anything that's very
convincing.
</snip>

I am afraid you are screwed. Trying to explain something like this to a
programmer who wants to be nothing but an RPG/400 programmer. Talk about
a lost cause.

ILE is a different way of thinking, of writing code.

The reason that ILE exists is just simply that monolith code cannot be
maintained.

Try making the simplest change to any monolith program. An absolute
nightmare and every change means that the next change is even harder.

My question is always the same, why would you want to write the same
logic over and over again?

The whole concept of ILE is encapsulation, i.e. information hiding.
Writing it once.

Instead of building one big monolith program, you build small pieces of
code that do one thing and one thing only.

ILE lets you do that. The superiority of ILE over writing monolith is
just mind boggling. I can write a fraction of the code and write code
that is solid. If I have an error, I can go to one place to make the
change, not twenty different programs.

In short, ILE lets you apply the concepts of information engineering but
how to get someone who doesn't want to do anything except hack monolith
code to understand that? Brother.