A spark, an idea, a concept.
Have we lost the plot?
No. That comes later.
The Spell Battery - the idea that changes the world.
That takes us from Golarion to Eberron.
Through Endon and the Magical Industrial Revolution of course. But not quite yet. Because the Spell Battery isn't ready yet.
We must charge it.
What if you kept making rods of absorption, and stacked them end to end, until they wrapped around the world?
Who wants to do that math?
We are going to use 2 feet because otherwise it wouldn't make sense that George here is holding one:
George is small, not tiny or diminuitive after some upgrades over the levels, but still there must be some forced perspective going on here if that rod is 2 feet long!
Anyway, we asked "How big is Golarion" and google gave us this forum, where we read:
Easy peasy, just 131,482,560 feet, divided by two would be 65,741,280 rods of absorption, which could hold up to 3,287,064,000 (3.29 billion) spell levels.
Woah that's a lot!
There is no reason to physically go around the planet tho....
More likely Eco the Exploiter's demiplane, create greater demiplane being a great candidate for the Caster Level spell exploit.
But more than one strand. Tightly woven...
Absorption fibre optics.....
spell optics
The spell battery is charging.
The world has already changed, they don't know it yet.