So consulting companies can make bank teaching you how.

After convincing the CIO that 'GREEK' is the silver bullet to their problems.

/s

Because that's the language the laws are written in. If you don't speak Greek, you don't know what the law is, so you'll break it. That's a bad idea.

If you're living in the Byzantine Empire, that is.

Same can be said about English with regards to programming. Most people don't have English as a native language.