As a person that has always searched for rational explanations, I have lived for many years with the desire to discover a more rational explanation of gravity, and the forces involved in the generation of ocean tides. As a lecturer in coastal engineering I struggled with the idea that I was teaching my students that ocean tides were caused by the gravitational 'pull' of the moon - an idea that suggests that the Moon's gravity is actually pulling on water particles within our oceans. I knew this explanation wasn't logical, but I had no other explanation that I could give my students at the time.