So you're saying that scientists induce that there are no miracles, which means they're open-minded about the possibility of such a rude awakening. As my upcoming article on the brute-factness of the laws of physics or cosmology shows, though, many scientists do posit that end to scientific explanation. As to whether they "know" there's such an end and that natural laws are brute facts, that ends up being a question of scientism, as I'll discuss in the article.
The pragmatic basis of scientific inquiry includes the industrialism and Promethean/Faustian/Satanic empowerment of humanity that I posit. It's philosophy or sociology that talks about that basis, but the pragmatism isn't itself philosophical. We need to distinguish my philosophical argument from the motives my argument posits.