{Answering in reverse order, but you’d be surprised! Not too many people notice if I’ve accidentally contradicted myself. I guess it helps that I only publish once a day, and with about three years’ worth of content, there’s just so much to look through it’s easy to forget if I’ve covered something already, even for me.
And in a way, that actually helps me too. Like, for the bigger stuff (like stuff about Bill or Lanette, the general world, etc.), that’s usually actual headcanon that I’ve had for ages, and other stuff I just remember because it’s hilarious (like how to properly care for an unown). But the other stuff, like how salandit evolution works or somesuch? That can get trickier. If I’m not 100% certain how something works, I usually make it a point to look through the tags/search myself to see if I’ve written about it, then go from there. But if I don’t find it at first and I’d already written about it (which happens from time to time), usually, people don’t notice, no. It’s actually more frequent that I get asks about stuff I’ve already covered (no salt intended there), so … to be honest, I don’t worry too much about whether or not I’m about to say something that contradicts another post, haha. :’)}