I feel like 90% of this advice to authors comes down to: your advance is just that, an advance on sales royalties. Non-recoupable, but if you're 'lucky' enough

I feel like 90% of this advice to authors comes down to: your advance is just that, an advance on sales royalties. Non-recoupable, but if you're 'lucky' enough to win a bigger advance than your eventual sales, it's not a great sign for your career anyway.