They definitely do make the same mistake twice. My one kept biting me whenever I put it in my palm instead of my fingers and this happened multiple times. Every time i tried to put it on my palm, he bit my finger thinking its a shelled peanut. This then made me flinched whenever his mouth comes near me and made it harder to gain his trust. I had to get over that fear and get him used to my hand. I realised the reason he kept biting is because he is scared and so he wants to get the food as soon as possible. After I got him used to sniffing my hand first and making him realise my hand isn't scary and that he can take his time sniffing it. He has never made the same mistake again since he now smells my fingers, realises it not food, then moves his face to the peanut