Rushing to optimize before the bottlenecks are known may be the only error to have ruined more designs than feature creep. From tortured code to incomprehensible data layouts, the results of obsessing about speed or memory or disk usage at the expense of transparency and simplicity are everywhere. They spawn innumerable bugs and cost millions of man-hours - often, just to get marginal gains in the use of some resource much less expensive than debugging time
Eric S. RaymondBeing able to break security doesn't make you a hacker anymore than being able to hotwire cars makes you an automotive engineer.
Eric S. RaymondThe next best thing to having good ideas is recognizing good ideas from your users. Sometimes the latter is better.
Eric S. Raymond