Not if you're innocently browsing a file in less, accidentally hit `v` instead of `ctrl v`, and suddenly find yourself in Vi, possibly now in some weird mode due to the other keys you just pressed under the assumption you're still in less.
>OMG, how am I only now learning about this life-changing feature?
Ironically you might have learned about it sooner by using Emacs more, because then you'd be more likely to use the ctrl-v Emacs hotkey for scrolling down fast (which also works in less) and mispress it.
