Just - if you gotta explain the why, use the backup power reason.

[ it's kara's secret. and even if everyone knows - they don't want it on the network, not even in a private transmission. ]

I think you'd be bored by most of it, honestly. [ it's a lot of busy work. ] But how are you at headache inducing physics?

[ cuz figuring out the way home - that's his most important project. ]