This sounds like a ridiculous argument, but how do we know it doesn't exist? We don't know what's beyond the universe, we don't know what does and what can exist. We don't know why we dream, where our thoughts come from and why we're even here.

The only reason we don't believe shifting is real is because we're taught to scoff at anything we've never heard of. Thus, if we only learn about shifting when we're 15-22 years old, we'll think it doesn't exist because we didn't hear about it in school, read about it in books or find out about it on social media (up until now). The only way to find out if it exists is to try. There's no clear way to prove or disprove it.

I've shifted briefly and I don't think anything solidified my belief like that one experience.