Source: https://scoutapm.com/blog/premature-optimization

• 97% of the time, Premature Optimization is a root of all evil.
• But not Optimization is a root of all evil!
• Moreover, the original saying was from around 1960s, when computer are still using punch cards, CPU processing was costly.
• Optimization is NOT only about performance, but also about the design.
• You're more prone to mistakes when you optimize code early.
• But don't skip necessary optimizations by flagging them as premature.
• Find and measure the time you can save with optimization.