His comment is a little more meaningful and less redundant than that. For instance, I was aware of the difficulties in storing anti-matter, but it hadn't occurred to me why it would be such an efficient energy storage mechanism. Sure we can't store it well yet, but obviously that's one of the things scientists are going to be thinking about the most as they look to do more experiments with.
Curing cancer will revolutionize human health. If we could only cure cancer.
and so forth...