The Importance of Concentration

I remember seeing a lot of problems when people were doing too many cards burn out. I think more than the amount, it really matters like your mindset and what you're doing during the immersion. It doesn't matter if you add 20 cards a day and you can keep up with your cards. Chances of them that you are actually acquiring those cards are on exactly the same level as if you only did two cards a day. If you're generally interested in the language, that's way easier to do. If you'm not, it's a skill.