The 8th edition of Organic Chemistry by Paula Bruice suggests that secondary alkyl halides do not undergo SN2 reactions. However, many other sources state the opposite. So, what is the correct answer?
Tertiary alkyl halides undergo SN1 solvolysis reactions with poor nucleophiles such as water and alcohols, but methyl halides and primary alkyl halides do not. A recent investigation of Huges and Ingold's data showed that secondary alkyl halides also do not undergo SN1 solvolysis reactions.* Thus, methyl halides, primary alkyl halides, and secondary alkyl halides undergo only SN2 reactions.
The textbook refers to Murphy, T.J. J. Chem. Ed. 2009, 86, 519-524.
I'm curious as to whether this assertion has been upheld or disproved by other members of academia.