Are (a) and (b) both grammatically correct and if so how can they both be correct at the same time?
(a) She has potential. (b) She has a potential.
I was always under the impression that (a) was correct and (b) was not but I was told recently that (b) is also valid since potential can be a countable noun, like opportunity, so we can add 'a' in front. However, I thought "a potential" used as a noun would only be correct if it was immediately followed by something like 'for' and 'to' (e.g. "a potential for.." or "a potential to..") which isn't the case here in (a) and (b).
Thanks in advance