Find some X and Y that pass the 'necessity test' then. If X and Y don't warrant express investment in first place, how come they justify investments on space p

Find some X and Y that pass the 'necessity test' then. If X and Y don't warrant express investment in first place, how come they justify investments on space programs after the fact? To defeat this reasoning, I suggest you try and find a reason why serendipity should work better in projects with less immediate usefulness. I could be convinced that's the case, but I haven't heard arguments in favour of this hypothesis so far.