Provenance ownership, and of evidence left in books that shows how readers interacted with them. Provenance studies may shed light on the books themselves, providing evidence of the role particular titles have played in social, intellectual and literary history. Such studies may also add to our knowledge of particular owners of books. For instance, looking at the books owned by a writer may help to show which works influenced him or her. Many provenance studies are historically focused, and concentrated on books owned by writers, politicians and public figures. The recent ownership of books is studied, however, as is evidence of
An Act to amend the Criminal Code (offences relating to conveyances) stays in the body, possibly for days after use, which critics believe could lead to arrests of people who aren't impaired. Jody Wilson-Raybould argued that requiring police officers to have suspicion of impairment, before screening, would serve as "inherent protection to avoid charging drivers who were not actually impaired," and that the screening methods "are consistent with the approach taken in other jurisdictions." Critics have argued that the smell of marijuana in a vehicle could lead an officer to suspect impairment, regardless of whether it has been used by the driver, therefore leading to the requirement being ineffective. Serge Joyal