The letters could be skills and they come in layers. Prerequisite skill A limits the max you can learn from skill B.
Yeah, if you use the points system model, your A skill could be at 30 and your B skill could be at 15. Your B skill can’t go past 30. The limit was placed by skill A. I think that’s cuz skill A is a prerequisite to learn skill B.
If you’re skill on B is limited to 15 and it’s at 10, you are not getting C to over 10. How close can skills get btw? Tens? Ones? If they’re by ones then it’s so close.
“And so on.” means that the same rules apply to every skill ahead. Your E skill could be so low that it’s close to zero. It’s like your CF skill being at zero before you found it. I wonder how many prerequisites are actually at zero if your average prerequisite skill is at 40. You could have a 0 prerequisite skill but that’s offset by another higher prerequisite skill.
Are some prerequisites independent of each other? If prerequisites come in layers are there separate structures for them? Your prerequisite skills are being limited by previous floors but not by other prerequisite skills?