How do you convince someone that supernatural things don't exist?

Of course there are frauds and hucksters. There are also real effects that have incorrect explanations A lot of these things are placebo effect, for example. This does not mean you dismiss it as "only a placebo effect" Placebo effects can be impressively real. One spectacular example is this medical case. > Incurable Skin Disease Completely Healed By Power Of Suggestion > > https://www.youtube.com/watch?v=V22CTJwQkjM so if you dismiss this out of hand, you can be going against what they "know is true" even if their explanation is obviously wrong. This case also whistles by (i.e ignoring) the implications of "the power of faith" --- Placebo results from the fact of believing something is a certain way. --- You are also dealing with fixed mental models of the universe. This can get rather religious in weird ways. Sort of like people with stubborn political beliefs and prejudgments of situations and people. So when you say these things are stupid, you are coming in at too high a level. You need to address the problems at a much more fundamental level. For example Racism is basically wrong because there are 48 visually distinguishable human types, and skin color does not really correspond to other characteristics like blood type, etc. It is entirely superficial. There is no blood test for whiteness. see *Artist's Guide to Human EthnoTypes* http://cedarseed.com/portfolio/human-types/ and the Nazi version of racism is event more superficial, because it is entirely tribal (german race, british race, spanish race, etc) There are many human types. But the old ideas of race are obsolete and laughable, *because the reality of the human condition is sooooo much more complicated.* What they should research are the genetics of their own personal ancestry. > Origins, spread and ethnic association of European haplogroups and subclades > > https://www.eupedia.com/europe/origins_haplogroups_europe.shtml also > https://www.familytreedna.com/projects.aspx for example > https://www.familytreedna.com/groups/r-1a/about/background quick chart http://i.imgur.com/IKLXss5.jpg get expert on this, and a lot of other weird ideas fade away. --- so the bottom line is saw away at the foundations of their unfounded belief with things they can get interested in.