It's true... replacing aer with mana might create a whole bunch of new problems. [At the moment, it looks like a miracle solution... but it's naive to think Rita can change something so vital not just to magic, but to all life in the world, without any ill effects.]

But there isn't any time to worry about that. Without mana conversion, humanity won't survive for much longer. So all we can do is go ahead with this plan, and deal with the consequences as they arise.

[Yep, it's reckless as all hell. But that's how Rita does things.]