What are the other mechanisms by which RTX might be working?

[MeSci]

I think a member has it in the signature.

Ah yes - it's not entirely new:

http://www.amazon.com/ComputerGear-Molecular-Level-Busy-T-shirt/dp/B0046IDRWK

but I think that ours should say 'extremely busy' rather than 'quite busy'!

Many a true word is spoken in jest...