I agree that the feelings of love differ from individual to individual to a degree but if someone "claims" that love exists there has to be something testable about that claim and then you just test the claim. People, in general, don't have to "believe" in love. That's the problem with ghosts, you have to "believe" in them because otherwise there is nothing there. Sure, you aren't likely to change someone's mind who believes in ghosts or anything else if they are so invested into that belief that facts don't matter. However the scientific method will help anyone else who truly is just looking for facts. Kids believe in Santa but when presented with facts they easily let go of that belief. For those who believe in ghosts it doesn't seem to work that way for them because they are, for some reason, so invested in there in fact being ghosts. It can be ignorance of course, especially long ago when little was known about anything then anything seemed likely or probable. Human sacrifice seems to bring better weather the next year to some. It wasn't hard to change opinions about human sacrifice once we understood more about weather and growing crops. Today it seems to be the least scientifically literate that "see" the most ghosts. With most people, I'm guessing, they saw their last ghost by the time they reached puberty. Regarding tests for love, you just have to agree on some definition of love and what it is claimed that love can do. They have tested prayer and found that it makes no statistical difference (in a double blind experiment). The key to that is first defining exactly what is being claimed that prayer does. I would think you could pin down some aspect of love in a similar manner. My quick definition or example was just off the top of my head and not rigorous enough to test but there should be some common claims that could be tested. It's not about proving that ghosts exist or proving that love exists. It's about making a claim that should follow from love (or ghosts) and then testing those. If no claims can be made then we really aren't talking about anything. With ghosts, people generally haven't been specific enough in what they are claiming. It's usually too nebulous. It often something like...sometime they appear and sometimes they don't, they are from the spirit world but sometimes we can see them. You can't take pictures of them because they aren't "solid" but they can wear watches and clothes. You can't communicate with them but they make noises and walk though doors, sometimes. Not everyone can see them and you can't summon them. They are trying to scare you or tell you something or they come in love or...Please Register or Log in to view the hidden image!