A viewer asks: “There are some people I know using the Rife machine technology for healing various ailments. Is this electromagnetic energy beneficial, or is it detrimental, as with most other electromagnetic energies?”

We disagree with your characterization that "most electromagnetic energies are detrimental." That is too broad a characterization. There are specific devices using such energies to great advantage and this involves an array of possibilities, for example, when electromagnetic energies are transmuted into sound and sound is used for healing benefits. Similarly, electromagnetic energy can be used to create a magnetic field that may have similar healing properties when applied intelligently in proximity to bodily tissues. There are many technical details that need to be attended to, but there are devices of great benefit used in medicine currently, or that have been developed independently by would-be healers and used to advantage. The Rife technology is one such approach, and we have endorsed this previously when it is produced accurately in keeping with the innovator and not a device simply borrowing the name and promoted as a kind of scam. As always, the devil is in the details when looking at such things, but in general, the instances you know of have been legitimate and were done in a way that was beneficial to the recipients.