Authors:

We've become more and more interrupt-driven. If you have six tasks to do in an hour, you can't just take 60 minutes and divide and have 10 minutes per task. You have 10 minutes per task minus the time required for context-shifting. That will be the next big challenge: figuring out how to fight the distraction-driven mode we're in and stay focused on one thing long enough to get it done.

Source: www.sfgate.com
We've become more and more interrupt-driven. If you have six tasks to do in an hour, you can't just take 60 minutes and divide and have 10 minutes per task. You have 10 minutes per task minus the time required for