I don't think the acid's the focus here, it's more comic relief than anything.

Seems like the title is a parody. The Rosetta Stone allowed us to read hieroglyphs and translate them into Latin and Greek - furthering our knowledge, opening doors, advancing the race, etc. We have here in this tale a similar opportunity to acquire some type of critical awe-inspiring knowledge.

The only problem: our protagonist doesn't have a fucking pen to write it down.

I get a kick out of it myself.