This, we know is false . Mechanisms such as neuroplasticity , allow us to conclude otherwise. Therefore, we should not necessarily set us a limit that does not change over time. What we should understand is that as long as we keep becoming an expert in a topic , it will be easier for us to get into it; and as such, we will be able to advance further in it in less time.
MORE IDEAS FROM How can we achieve more with less
I think this has been one of my favorite podcast from the Tim Ferriss show, specially because it made me change my mind about actors and their day to day lives. Sometimes, we think that actors are blessed human beings who are being gifted with money without a lot of effort, this podcast made me think otherwise.