you’ve sunk your retirement savings into opening a cafe and it doesn’t work, that’s bad. If you hustle together $50k to start your business and spend all $50k on your first idea only to see it fail, that’s bad. On the other hand, if you have $50k and spend $5k to learn you’re running down a dead end, that’s awesome. You can use the rest to find a viable path to your goal, with the advantage of all the extra things you now know.