"Oh. My power will cough up most things if I give it enough levers for software rather than a human operator to push. I got it to work at night because light conditions vary a lot more meaningfully at night - so I could have a setting for flying under a streetlight and various levels of light pollution and moon phases and stuff - and I was trying to convince it that 'daylight' was a valid setting but didn't get anywhere. And it didn't work very well because I didn't want it deciding when to be invisible, I needed to be able to guarantee that it'd just stay that way, and I didn't think they'd find 'it will probably usually judge that it is correct to be invisible' would fly."