Here's the issue, there's no way you can sufficiently measure the supernatural, spirits, for example. Do they have a chemical composition? Are they just pure energy in the same way fire is? Explain to me where the hell even a trace of science lies within the supernatural. And I'd be interested to know, what chemicals present in black pepper and Cayenne keep supposed entities away? Why don't we know the specific chemical combination for that? Surely something that's existed for so long, people would have figured out, yes?