Legacy code imposes an unbounded, inexact tax on the cost of all future features. This explains why I run events like Legacy Code Retreat, build training courses like Surviving Legacy Code, and write in general about improving the design of software systems. This further explains why I’m willing to accept the risk of people labeling me as an “over-engineerer”. What they label “over-engineering”, I consider managing risk. As part of managing risk, I like to test-drive changes to lega...
