When I did the calculation in grad school, the cutoff was Osmium. Any element lighter than Osmium cannot be over-loaded into a small flat rate box.
That sounds really familiar. Almost like I knew that, despite what I just posted. I'm having a really weird dilemma right now in my brain. . .
I'm not sure if my calculations were wrong, or if I just remembered the outcome wrong because "Osmium" is really tripping off my deja-vu sensor.
