No. If I am trying to be scientist, I have to admit few things...
1. I have to search for the answer to everything. Thats why I go to science, to enlarge knowledge of humanity. And because I am solely interested in many kinds knowledge.
2. I can't know answer to everything. Nor I will ever know. Nothing I will know will be 100% sure, as I wrote in post there. Everything I will know would be hypothesis or more likely theory.
3. But, this is best way to learn things. This is best way to get stable knowledge, not dependent on personal experience. No one have been able to disprove it.
It is because testing of hypothesis, creating experiment, that should disprove and falsify those hypothesis. Even that many other experiments should be done. That mean, when you create experiment and get data, which disprove this theory, and that experiment is of course repeatable, I would gladly change my knowledge, I would gladly say "This theory is wrong. We have been wrong." Thats holy grail of every scientist. Do you know, why this didn't happen? Why major theories aren't falsificated so often? This isn't because scientist try to hide their prooves and laugh to everyone, who have those. This is because there wasn't repeatable experiment, that disprove major theories. And those people, not realy scientist, more pseudoscientist, only media make so big bubble from those, who have those data have faked them. From bad method, to raw data (and filtering everything to get what they want). Sadly, this happen quite often. So real science is quite stable to create stable and right knowledge.
Many those, who came with "spirits" and "god" have said something, that could be testable. Were tested (it would be realy amazing, realy, if ghost and spirits and magick and many other amazing things were realy, but they probably aren't) and were disproven. Because those who came with those hypothesis weren't realy scientist and didn't realy understand what they were talking about. Man is created to be paranoid.