Mathematics and physics are my passions in life, but I have grave concerns about the survival of basic knowledge, which permits civilisation to continue. In a nutshell, people are becoming so dumbed down, even given technology, which they use like “magic,” that if some sort of collapse occurs, it may not be possible for any sort of speedy rebuilding of advanced knowledge, contrary to thinkers such as Lewis Dartnell, in The Knowledge: How to Rebuild Civilization in the Aftermath of a Cataclysm, (Penguin, New York, 2015). People may not be even able to understand long sentences, like the previous one.
http://the-knowledge.org/en-gb/the-book/
Rebuilding the world from first scientific principles will, at some point require a high degree of mathematical knowledge, and I do not believe that Dartnell has considered how difficult it will be to preserve mathematical knowledge. Consider:
