Too Long; Didn't Read
<a href="https://hackernoon.com/tagged/software" target="_blank">Software</a> <a href="https://hackernoon.com/tagged/engineers" target="_blank">engineers</a> place a lot of emphasis on code performance. There is often tension between non-engineers who want more time to be spent on building new features and engineers who want to spend time on improving performance. The app seems perfectly fast to you. So why do engineers care so much about shaving a few milliseconds off of something that already seems to be pretty good?