A client's codebase had try-catch blocks wrapped around everything. Nothing ever crashed. Nothing ever worked correctly either. The error handling strategy was actually an error hiding strategy.
A startup founder built their MVP almost entirely with AI coding agents. It worked. Then they hired a team, and within two months nobody could ship anything. I got called in to figure out why.
A client's team was drowning in a 200K-line TypeScript monolith. When we finally measured what was actually running in production, we found that almost a third of it was dead code nobody had touched in over a year.