> the authors acknowledge that some people might dispute the applicability of the term lie, while defending it on the grounds that "it is for the best possible reasons, but it is still a lie".
The same way that Pi is not 3.14159, nor it is 3.141592653589793238462643383279502884197169399375105820974944592307816406286, and it's not a lie, just an approximation.
The reality is that we don't know the https://en.wikipedia.org/wiki/Theory_of_everything
Even general relativity is a lie if you want to go that route.
This Wikipedia article is just scientific trolling promoted by satiric authors like Pratchett, that some people here are taking too seriously.