So the intern just casually suggested implementing a linear search through a billion rows in production. You know, O(n) complexity where n = 1,000,000,000. That's the kind of suggestion that makes senior devs age in dog years. The facepalm energy here is palpable. Instead of using proper indexing, query optimization, or literally any form of caching (Redis, Memcached, even a hastily assembled HashMap), the intern wants to brute-force search through a billion records like it's a CS101 homework assignment. Real-time? Sure, if "real-time" means "come back next Tuesday." This is basically the database equivalent of reading every single book in a library to find one phone number instead of just... using the phone book. Indexes exist for a reason, friend.