Love this movie, but there are some things that bugs me about the story

I feel the same way. The AI was so intelligent, and thought so fast, it just seemed pure plot-stupidity to have that silly bunch of anti-AI guerrillas actually threaten and destroy his set-up.

Yes, no back-ups? An AI like that doesn't have a copy of itself somewhere safe in an underground bunker somewhere?

Knocking out a few solar panels left him so low on power that he had to make that silly choice at the end to save EITHER his wife or his best friend? What, when a cloud crosses the sun he is weakened? He's dead at night? That's ridiculous. He would obviously have had not only backup grid power, but underground battery storage for his solar panels.

But I know, they had to move the plot forward and he had to be beaten somehow in the end. But they should have come up with a better way. This was like Kirk and Spock blowing up the android world's brain by acting illogical until sparks and smoke started coming out of their heads:)

Maybe they ran short on time and money and had to film a quick wrap-up scene?

A backup is useless if the entire world was shut down... no internet at all! What is a backup gonna do? Think you missed the point on that one. As for the solar power, that was never an issue. He couldn't save both because of the time, not lack of power.

I thought maybe that secret nanite flower garden shown at the very end was a hint that there was a partial backup.