This book is to serve as a tool, which will be used to measure the modern-day understanding of what is called sex and to throw more light on what we call gay and straight. I believe the words 'gay? and 'straight,? as referred to sexuality of people, have been used wrongly, or it is not understood. This can be well understood if we use this book as the spiritual tool or a yardstick to measure what is sex by taking into account that there are two realms in the world we live in'the unseen realm, which is the spiritual realm, and the seen realm, which is physical. Everything we see in the physical world originated from the unseen realm. Everything that we do in this physical world has impact in the realm or the spirit realm.