No.
B + C = A
B is finite
C is infinite
Therefor A is infinite
That's over all categories. If A is cyber security and B is biology topics, then C is still zero, therefore finite. Anyway, I think you're reading too much into an offhand comment.
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That's over all categories. If A is cyber security and B is biology topics, then C is still zero, therefore finite. Anyway, I think you're reading too much into an offhand comment.