> 12. Use O(n²) algorithms wherever possible, and ensure your test data sets are always small. Be sure to say you can’t replicate slowness when you close the ticket.

hah, I saw some of that right here on HackerNews, on today's thread about someone cutting GTA's load time from 6 minutes to <2 with a few lines of code. A lot of stuff along the lines of "I can't believe you'd attack the engineers like that, they're just focusing on what's really important to the company"