Okay, Felix Felicis is known as "Liquid Luck". But what if it wasn't really lucky? Yes, what Harry did was near impossible, and without the liquid luck he would've died. But, even with magic, can you even forge luck? What if the potion was only there to give the wizard the satisfaction of thinking they have luck, giving them more confidence? This is something that you would see in products, like a "Balance Bracelet" that gives gymnasts (like myself) "balance." That was nothing more than something to help you believe that the bracelet is helping. What if it's the same with Liquid Luck? The video explains more.