100% of the system is read only? I assume you are using a ramdrive or something like that for tmp files and the like? I don't know shit about windows, but I don't think it's going to run without any kind of writable space.

OTOH, if you want a simple solution to this issue, and the system is read-only, I think your simplest antivirus solution is called "reboot".

Of course, you should be looking into running GNU/Linux in this babies. It certainly runs better on Atom than windows ever will.

Additionally, such waste heat might not actually be "free" - depending on some of the implementation details.

The engine works by generating heat and then converting it to mechanical motion while dissipating that heat to a cold sink. If you don't "waste" that heat by sending it to a cold sink then the engine operates less efficiently.

Again, it depends on the details - the energy might be "free," or it might just rob the engine of power just as an alternator does. You can't get around the laws of thermodynamics, though...

"It's difficult to come up with a faux urine, explained NASA's Jim Lewis, the systems manager overseeing development of Orion's potty. 'That's why we depend on collections.'" They can tell my sex, blood type, color of my eyes and hair, my favorite brand of cigarettes and my probability of being obese from a drop of my blood but they can't synthesize urine? Where there heck did things go so wrong?