Pragmatic reasons why you can't (in all circumstances) just add floats to a language and simulate integers:
miniblog.
Related Posts
Free monad considered harmful https://markkarpov.com/post/free-monad-considered-harmful.html
Excellent, pragmatic blog post discussing usage of free monads, performance, and when you can simply use typeclasses.
I've started following discussions in emacs-devel and I'm happy to report that communication is generally positive and pragmatic.
Pragmatic, candid account of creating a new programming language:
