[wruza]

You can e.g. electrolyze water at home and see bubbles. Of course this proves nothing but the fact that water has something in it that makes bubbles at plus or minus, and regularly so. You can add salt/soda and see that it goes faster. All this is not a direct evidence of H or O or what electricity is, but at least some indirect one that can be progressed further, even if you won’t.

You can buy a complex device like a microwave oven or a chemistry lab and experiment with them, checking how they map to scientific knowledge, and asking on physics/chemistry SE about your findings and getting answers from people completely uninterested of fooling you, who are not knowledgeable of what you’re doing besides what you described.

It’s harder with C=6, but by messing with chemicals you can at least make some natural sense of what 6 means in that theory.

Religion at its face value cannot be experimented on at all. Any coincidences (if you find what to experiment on) are so irregular that can only be explained by statistics, even if you won’t. The only way to “study” religious knowledge is to fall for an interpretation of the day, which is always based on some experimental knowledge which others extracted from nature, because these people are interested in converting more adepts from a general population.

You’re correct that there is no direct way to learn and proof to yourself due to materialistic limitations. But when you take plausible interests and statistical phenomena into account, you can easily see yourself what has much more evidential depth and innocence of presupposition.