A truly ubiquitous computing experience would require the spread of computational capabilities literally everywhere. Another way to achieve ubiquity is to carry all of your computational needs with you everywhere, all the time. The field of wearable computing explores this interaction paradigm. 

How do you think the first-person emphasis of wearable computing compares with the third-person, or environmental, the emphasis of ubiquitous computing? 

What impact would there be on context-aware computing if all of the sensors were attached to the individual instead of embedded in the environment?