The Zombie: While developing a site, forgetting to refresh the page after you make a change
Always a Zombie? Yes
Severity: Medium to High, Depends on how long it takes you to realize and how much troubleshooting you do before you realize
Why is it a Zombie: You can’t see any of the updates you just made.
Cure the Zombie by: Always hitting refresh on your browser after every time you make a change. Alternatively, use a web server like CodeKit or webpack or Bracket’s built-in server that automatically updates when you save files.