The implication is that you can find many ways to do something that’s simple (not sure how simple skinning a cat would be; I think it’d be messy, and I’m certain the cat wouldn’t be happy about it).
So, your Mac goes to sleep when you least want it to– during a movie, while you stepped away for a few minutes, your MacBook is on battery power, or whatever. How do you stop it? Foresight. Change the sleep settings in System Preferences. Or, install the free AntiSleep app. It does what you think it does.
First, it blocks the display from going to sleep, but it can also be set to block the Mac’s system from sleeping. Click the Mac’s Menubar, select the setting, and, done.
Options are straightforward so master AntiSleep is quick. Set it to keep the screen alive indefinitely, or in minutes or hours. Select the System or Display. Change settings for releasing AntiSleep at a critical battery charge level, or just set it to Sleep or to Screensaver, as needed.
If you’ve ever been watching Netflix or Hulu or anything else on your Mac’s screen and it went to sleep when you didn’t want it to, you could use AntiSleep. And why not? It’s free.