I think we should point out that part of that 8-sigma confidence I am quoting isn't just the initial experiment (which may have had as little as 3-4 sigma confi

I think we should point out that part of that 8-sigma confidence I am quoting isn't just the initial experiment (which may have had as little as 3-4 sigma confidence intervals for quantum tunneling), but also that there are further experiments that re-confirm quantum tunneling by relying on it to observe some other effect. That is something that is also lacking in the social sciences, medical science, and even some parts of modern physics: experiments that confirm other results by taking those results as fact and finding new effects.