User blog comment:PsiCubed2/Fractional Psi Levels (extended table, summarized)/@comment-37246647-20181129060318/@comment-30754445-20181130002855

There's a reason I've specifically suggested ω2.

On the one hand, it is a simple enough ordinal to visualize directly (it basically represents a grid of items that stretches to infinity in both dimensions).

On the other hand, it's about the lowest level that actually forces you to learn what ordinals are, if you really want to understand how everything works. With ω+n you can fall back on ordinary intuition to see what's going on, and you don't even have to think in terms of ordinals.

And I repeat what I've said earlier, about ordinals and the FGH being a far simpler thing to learn than it seems at first glance.