Think about it ...
Once you have scanned a source to know what it is about, reread it while thinking critically about its argument.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"All sizes | Bearded Philosopher | Flickr - Photo Sharing!."
http://www.flickr.com/photos/ian-w-scott/4870567608/sizes/l/in/photostream/
Flickr
CC BY-SA.