Changing word status

Hi! Is it possible to have an option to change known words back to unknown in the current version or in the future? And if Lingq insists on not having the option, may I know the reason for that? Thank you!

You can’t make Known (white) word blue again, but you can save it as LingQ. Just select it, choose the translation and save it as LingQ. There is no reason to keep a word blue.

I don’t know if I got your point I’m afraid. I might accidentally make an unknown word known that I don’t want to work on as a Lingq right now. Anyway, if the option isn’t available, I guess I’ll have to be extra careful about it.