Used to express the idea that 'it's not that it's not', implying something is possible but not certain.
Long explanation:
The ~なくはない grammar point is used to express the idea that something is possible, but it is not certain or it is not the speaker's first choice. The formation uses 'ない' form of verb or adjective, followed by なくはない. It translates to expressions in English like 'It's not that it's impossible' or 'I could, but'.