Well, as for the start of Brutal Youth, Lois was tired of only Clark breaking the laws of physics and decided she wanted to start breaking them too. It's quite simple, really.

I think, therefore, I get bananas.

When in doubt, think about time travel conundrums. You'll confuse yourself so you can forget what you were in doubt about.

What's the difference between ignorance, apathy, and ambivalence?
I don't know and I don't care one way or the other.