# A word which means that the existence of one thing does not mean another thing cannot also exist

For Example,

Solution A already exists, however it is a poor solution. We created solution B. The existence of B however, does not _____ the existence of A.

I was thinking preclude, however I thought that given that A already exists, this wouldn't fit. Thoughts?

Edit:

To be clear, what I mean is that both are allowed to exist at the same time. ie. The existence of B doesn't mean A can't exist and be used.

I thought I might be able to use: The existence of B does not preclude the existence of A.

However, I'm unsure if this is correct.

• Invalidate? Disprove? Not sure what you are seeking. – puppetsock Jul 23 at 13:41
• I think the word you seek IS preclude. – FumbleFingers Jul 23 at 13:48
• A bit too existential for me. And creationist. It’s not clear what you are trying to say. Is this a mathematical solution and you are saying both are correct? Are you saying that you have found a better way of doing something (counting heads rather than counting legs and dividing by two) but both will work? I think that if you formulate your question in simple terms you will be able to answer it yourself. – David Jul 23 at 17:35
• Hi Tyler, welcome to EL&U. You could say, 'The existence of B however, does not rely on the existence of A. – GoodJuJu Jul 23 at 22:16
• disavow, negate, exclude – SrJoven Jul 23 at 22:34