The discussion centers on the potential for bone repair stimulation through electromagnetic (EM) fields. Initially, there was a belief that EM fields from electric blankets could harm bones, leading to design changes in these products. However, some claims now suggest that EM fields might actually be beneficial for bone healing. While bone growth stimulators are recognized in medicine for promoting healing through electrical current, the conversation explores the concept of using time-variant magnetic fields to induce currents in materials like copper wire, hypothetically placed within bones. Concerns are raised about the practicality and safety of such methods, particularly regarding the implications for MRI scans. The effectiveness of devices prescribed for post-surgery recovery is also mentioned, with references to anecdotal evidence from medical professionals at UCSF. Overall, the discussion highlights the ongoing debate about the credibility and application of EM fields in bone repair.