(Please note that I skimmed to the information on practical applications as specific technologies and theories are not of interest to me, and I only skimmed the FAQ section.)As with any other book, there are pros and cons in this book. There are a great many assertions that are easily disproven, which really casts a poor light upon the authoritative nature of other assertions, and I thus can't offer more than 3 stars to this book. It is always disappointing when this occurs in books that otherwise might help human canaries look like they aren't actually tinfoil hat nutjobs.For example, EMF-shielding clothing absolutely is not of "life-saving" benefit to all. As an EHS/ MCAS canary, I have tested multiple items, across multiple brands. Wearing these items actually causes me life-threatening reactions (namely, heart palpitations and chest pains with rare airway disruption). Furthermore, those with these same diagnoses average about a 50/50 rate of benefit versus harm from such clothing. Thus, it is of serious concern that this is not mentioned in the book, and rather it is declared that everyone should wear such "armor." However, if one knows that they do indeed find benefit (test using an emergency blanket and cut it into a makeshift poncho), then that information could indeed prove helpful. But again, my concerns cast doubt on the assertions for products/ materials/ processes that I have not personally tested or researched myself. Most would likely reduce the rating even more, but I'm trying very hard to give as positive a review as possible as I do believe there was effort at a good intention here!Other assertions are also of concern, such as in regards to field testing, which simply cannot be conducted yet on frequencies/ bands that have yet to be unleashed upon an unsuspecting populace. Few are aware of this fact, or of the incredibly high cost of meters to test these fields! Do you have $20,000+ to spend on such meters? (Of course, cheaper meters do have great benefit, but these are not professional meters, which are required to test for some of the frequencies discussed.)I'm not sure how field tests can be conducted on frequencies that are not being emitted. Furthermore, were the appropriate meters purchased? The answers to these questions are undisclosed.Additionally, magnetic fields are remarkably complex to shield, with expensive shielding attempts often making matters worse. Alas, this is similarly undisclosed in the book and rather the opposite is asserted.With all of that said, this may be of benefit to TIs specifically, but just because one finds relief from a little shielding does not prove that one is a TI, as this book asserts. Radio frequencies in particular are ubiquitous today. Of course a little shielding would help! That doesn't make one a TI. It makes one human. Electroencephalogram. Electrocardiogram. We are all electrical beings.Citations would be of benefit but are lacking, unfortunately. There are some conflicting statements found within the book as well, and a number of assertions that directly conflict with my careful, extensive research and experience. So please do proceed with caution. Many assertions are of concern, but this does not necessarily invalidate all of the information in this book.This book is actually much shorter than it appears, as the type is large and there are a great many photos.Could this help you? Maybe. But know that EMF "armor" could actually harm you. Know that magnetic shielding is not as simple as suggested, and it could make matters worse. Even geobiologists avoid magnetic shielding because they know this to be true.Updated to add a photo from the book, in which it is disclosed that it was partially written by ChatGPT.There are actually a number of other books on the topic of nnEMFs that I would consider more important and practical to start with, if EMF mitigation is a new topic to you. This I would only consider after you have otherwise addressed sources of nnEMFs in your home and cleaned up a potentially unhealthy lifestyle.FIRST, reduce your exposure to nnEMFs within your home, your vehicle, and at work. Then, perhaps, you might consider some strategies shared in this book. Personally I didn't find any solutions for my personal issues as I had hoped, due to the above reasoning and the fact that I am reasonably well-read and educated on the topic of nnEMFs, and on most other toxicants.Control what you can, and focus on the good.... not on evil.