there's an argument to be made that if one does not have FU money in the bank, then one should work on whatever is most likely to end up with you reaching FU mo

there's an argument to be made that if one does not have FU money in the bank, then one should work on whatever is most likely to end up with you reaching FU money, whether it's working on an important problem or an unimportant one. then, once you have FU money, and/or are otherwise financially "secure" (as you define it personaly), then, go take the big risks or tackle the harder things.