Example: I once encountered a group of 6 people who called themselves "engineers." To solve what they thought was a new problem, they were going to build their own little database management system with their own query language that was SQL-like without being SQL. I pointed them to some published research by a gang of PhD computer scientists from IBM Almaden, the same lab that developed the RDBMS and SQL to begin with in the 1970s. The research had been done over a five-year period and yet they hadn't become aware of it during several months of planning. I pointed them to the SQL-99 standard wherein this IBM research approach of augmenting a standard RDBMS to solve the problem they were attacking was becoming an ISO standard. They ignored it and spent another few months trying to build their enormously complex architecture. Exasperated, I got a kid fresh out of school to code up some Java stored procedures to run inside Oracle. After a week he had his system working and ready for open-source release, something that the team of 6 "engineers" hadn't been able to accomplish in 6 months of full-time work. Yet they never accepted that they were going about things in the wrong way though eventually they did give up on the project.