1 . The Importance of Testimony We citizens of the 2lSt century live in a world where division of epistemic labour rules. Most of what we know we learned from the spoken or written word of others, and we depend in endless practical ways on the technological fruits of the dispersed knowledge of others-of which we often know almost nothing-in virtually every moment of our lives. Interest has been...

Second hand tobacco smoke exposure has been associated with neurobehavioral disorders among children. The objective of this study was to evaluate the relationship between second hand smoking and autism spectrum disorders (ASD) in children in the United States. Parent-reported postnatal tobacco exposure inside and outside the house and ASD diagnosis was examined in children younger than 12 years...