Right. I took to drumming very easily. Like you said about your sister, not having rhythm is something I don't understand. I think of that as a head start, but it doesn't disprove 10,000 hours. I do still need all the hours to reach my potential. Someone else without that head start but who practices a lot will catch up to me if I don't practice.
Even if I do practice the same amount as them, I expect the difference between me and someone without the head start would go down significantly over time.
So innate talent is a real thing but it's consistent with 10,000 hours.
I recently started drumming in a hobby band and I seem to have a knack for it. I'm curious to hear how you've progressed and what kind of practice you do. I'm just winging it and it's alright.
Drumming wasn't important to me, it was just a fun novelty for a short time. I knew what it would cost (both time and money) to bridge the gap from talent to real expertise and it wasn't personally worth it to me.
Even if I do practice the same amount as them, I expect the difference between me and someone without the head start would go down significantly over time.
So innate talent is a real thing but it's consistent with 10,000 hours.