I mentioned earlier that I found the GHCI use-case extremely useful (see my root comment after EDIT). But I have an issue with the uses like turning off the typesystem and have the project compile just so that you could feel good about yourself. I don't believe that would help your bottom-line. But, as long as I don't have to work with you or your software, I don't care. And, large refactoring efforts are necessary in every complex and evolving system, irrespective of your language of choice -- but turning off your type checker or any other static guarantees isn't the way to go. Programming is hard enough even in the presence of type-checking and automated analyses -- why make it even harder? Anyway, I feel like I've made my point enough -- take it or leave it.

> But I have an issue with the uses like turning off the typesystem and have the project compile just so that you could feel good about yourself

That's a strawman. The claim is that it is useful to be able to compile a partially-valid program so that you can:

* Test actually running stuff

* Get the inferred types of expressions

The idea is to temporarily turn it off just to run some tests or infer some types, and then turn it on again for the rest of the work.

I think that you're arguing against a point that no one is making. Everyone agrees you should not use this feature for any other purpose except to temporarily allow some tests and exploration.