Eh. No worries. I expect a relatively small minority of the HN crowd have exposure to decades-old mainframe systems. It seemed a plausible rationale, given th

Eh. No worries. I expect a relatively small minority of the HN crowd have exposure to decades-old mainframe systems. It seemed a plausible rationale, given the state of the world ~2000 when PayPal was ramping up was very different. Especially in the financial sector, I can see partners and/or requisite systems to interface with being heavily mainframe-based. And now, even if PayPal is following best practices, it's possible one of their counterparties is stuck in the 1980s. People forget that "building Fort Knox around a private line from X DC to Y DC" is sometimes cheaper than "rewrite COBOL system of record that no one alive worked on."