This is Book 4 in the series of Five.Follow Dave, our intrepid guide, on an intellectual odyssey alongside the AI Chatbot, "Hal 9001." This captivating exchange unfolds as a clash of wits, each striving to outshine the other through critical analysis of three revered topics in Modern Science.Delving into the realms of Special Relativity, General Relativity, and Light Speed, their engaging dialogue dissects these math-heavy theories with the sharp blades of reasoning and logic.You won't need your calculator; no math is involved. These weighty subjects are presented in a conversational tone that sparks curiosity and reflection, offering easy access to these fundamental concepts, then contemplates the possibility that all might not be well with Physics.If you have often thought that Einstein's Theories are a little "unintuitive", then so too has Dave, so here he has the chance to ask those awkward questions that few have ever pondered.The conclusions will certainly surprise you.This book is "almost totally, but not quite entirely, unlike anything" you have ever read before on these subjects. Thanks to Douglas Adams for this unique way of describing the unusual.