For the record, HBDC has had at least 2 threads on epigenetics and/or sperm, with minimal reference to commonly accepted terms and definitions.
Along with much additional debate in their Pit thread. As this is FQ, I do not comment on those other threads, but since there had been requests for HBDC to define how his usage differed from those of credentialed professionals in the field, I felt the existing references to his views may be helpful.