This is a _really_ good point the author makes. I definitely am guilty of getting into the trap of wanting to get new hardware when, realistically, I could do a

This is a _really_ good point the author makes. I definitely am guilty of getting into the trap of wanting to get new hardware when, realistically, I could do all of my work on a 10-year-old machine. This concepts also applies to website performance. I test my projects on physical iOS and Android devices, but they're both relatively new. I should start taking into account lower-end devices, especially on the Android side as JS is notoriously much slower.