Can you imagine the engineering discussions that preceeded this?

Management: So you say this is the best solution your team has come up with?

Lead Engineer: Yes

M: This is the most practical and economic solution to our problem?

E: Yes

M: Well, this seems like a really complicated system...

E: Having a distributed platform is great, because it gives our system robustness, of course ideally we'd want to have all the parts working but we can still go on if some parts fail.

M: ...and there are some unorthodox components...

E: It's true that there are some parts we are going to have to build ourselves, but you'll see that a lot of these are also modifications of proven technology that we can license from third party vendors.

M: ...and this user interface...

E: We've come a long way with our voice activated technologies, you'll find it to have excellent reliability in part because the keywords we chose are very unambiguous.

M: Okay I'll trust your judgment on the hardware side, but are you certain we need to have one person directing and another person performing the authorizations?

E: You'll find that separating tasks so that there's always an independent reviewer is quite common in safety critical industries. Besides, for all the money that is involved in the project, the cost of hiring another body is hardly significant.

M: Fair enough then, for now you have my probationary approval if you can implement the proposal within the specified budget.

Thus.