Many people claim that all vertebrate embryos begin as females. Is this true? And what does the science of embryology have to say about it? www.theparadoxinstitute.com/watch/do-we-...

My book, Binary, analyzes a new popular belief called the sex spectrum, showing how its tenets deny evolution, development, and genetics. I also explore how it fails to explain the diversity across species and within humans, teaching the reader to understand diversity within the correct framework.