Oh wow - thanks! The perfective is something I didn’t study before I went, and I learned it from primarily hearing it in the negative (e.g. 宿題をまだやっていない？！ - mom to her kids). So, I was kind of familiar with the perfective but this crystalized it for me. I didn’t know the 言っている nuances either.

That video is so helpful - thanks for linking!!

Thanks!

Thanks!

Thanks!

Thanks!! I like that analogy.

Thanks!! Yes, I am a native English speaker.

Oh I never thought about resource richness! Thanks.