[rmc]

The human operator checks the english description for sanity

There's a flaw in your system right there.

Lots of industrial accidents and accidents with computers have been from stupid operators (rather than buggy code per se).

[jlgreco]

Of course. But is it worse the flaws with than any business that handles cash? The idea is to use bitcoin's 'offline' functionality to bring it up to about the same security of regular cash.