That's fair!

> Facebook is a great example of this, there's some gnarly old spaghetti code under the hood just from the years of legacy code but those are largely invisible to the user and their experience of the product.

I'm sure that's the case in basically everything, it sorta doesn't matter (until it does) if it's cordoned off into a corner that doesn't change and nominally works from the outside perspective.

But those cases are usually isolated, if they aren't it usually quickly becomes noticeable to the user in one way or another, and I think that's where these new tools give the illusion of faster velocity.

If it's truly all spaghetti underneath, the ability to make changes nosedives.