"...All right, I'll tell Maillol."
"Shit, Carissa, I'm sorry. If I'd known, I would have stabbed myself before I prayed to my deity, and then stabbed myself again before I tried my first healing surge. I didn't realize it was a kind of data that would be that hard to obtain."
Keltham seems genuinely sad about his accidentally having wasted this IRREPLACEABLE SCIENTIFIC OPPORTUNITY that would have contributed to settling a long-standing confusion in Golarion!