Interesting, and somewhat doable for IDEs in current languages, but I think the real question is: is it possible for what you can't see to hurt you?

That is, if typing in one of the restricted views, is it possible to create a bug because of something that's currently hidden from you? I feel as soon as that happens to someone, they are going to switch to the "show everything" view and never switch back.

> look at the first vs. third code-block in this comment. People built whole programming languages on the premise that Hello World should look like the third block instead of the first one.

Well that was silly of them. Microsoft managed to retrofit it: https://learn.microsoft.com/en-us/dotnet/csharp/tutorials/to...