> they are not that complicated Yes, when you're only interested in creating a toy/proof-of-concept that doesn't consider: feature-completeness, optimization,

> they are not that complicated Yes, when you're only interested in creating a toy/proof-of-concept that doesn't consider: feature-completeness, optimization, concurrency, security, performance, transaction management, stability, etc. I suppose you could say that _any_ complex product. "Google Search is just a simple web search box, connected to a text search engine with a little bit of linear algebra on the back end. It's really not that complicated."