I think this quote summarizes hackers today: ``[T]ime spent sweating memory is time you&#x27;re not writing your app. The hard part is developing the experience is that you need to know when you need to care.&quot;<p>Not having to worry about memory is now a luxury we can afford in the age of plenty. While writing an efficient spellchecker would have been a great feat in the 80s, there&#x27;s no point of that when you can load the whole dictionary file in memory.<p>In other words, memory management is a #highclassproblem for many developers--you worry about efficiency once you have a lot of adoption. (Within reason; if your app is unbearably slow that isn&#x27;t good.)