User blog comment:PsiCubed2/How to make Deedlit's Mahlo-level notation more intuitive/@comment-27513631-20180807204248/@comment-24920136-20180809034605

" and Rathjen wasn't particularly interested in making his notation accessible to amateur mathematicians. So if using I instead if χ allows to save a few lines of explanations, why not?"

Deedlit is also not in the habit of creating  "just"  what is the most laymen accessible,  but also what is elegant, succinct, following-from-convention, and intriguing work. The fact that some of us got hooked to it even though at first read we had no clue what was going on  is proof of that. I just took the shortcut of asking him about the parts i didn't get ( which i believe i've encouraged you to do in the past, though you did mention real time chat does not suit you ), remember that even if very rarely other actual mathematicians have checked his Gwikia work, so its understandable that he would also cater to what they would be most familiar with. i'd say all things considered, its a very well balanced series.