Don't be so quick to make that definitive statement: (no 6.5 BIL). Electrical stimulation is far from being maximized for potential uses. Cancer, maybe you're correct, as electrical stimulation of cancer cells would not be the best thing, but who knows what more is in store for this science and potential future uses of these products or new products coming forward from this company. I have read where inserting electrical stimulation into the body or under skin could be more beneficial than wearing on top of skin for pain and other various problems. We have the history evidence of how tremendously beneficial pacemakers are in regulating heartbeat. Now if we get these 'gizmos' to grow some hair, we have a gold mind!