By Ben Stallings
In case we needed another reminder of why it doesn't matter that the iPhone can't multitask, a study published in Applied Cognitive Psychology indicates that most of us can't, either.
Specifically, 75% of people walking down the street while talking on their cell phones did not notice a unicycling clown passing them. (Oddly, neither did 50% of the people who were not talking on cell phones, so really the phone conversation only cuts our attentiveness by an additional half.)
Read about the study in