Although he could put on muscle faster than anyone else in the pre-steroids era, Hercules was a weak multi-tasker. That's why Hera sent the multi-headed Hydra to defeat him. Beset by multiple challenges at once, Hercules would surely fail.
Developers, for all our coding prowess, are similarly hobbled. We work best when we can focus on the task at hand: creating awesome Drupal applications. However, every day we're faced with a multitude of distractions preventing the planning and coding necessary for a successful project.